Argus C Series Camera Survey Results

Copyright 1998-2015 by Phillip G. Sterritt

email Phillip G. Sterritt

Last updated 9/4/2016.

The following is a 'living document' of observations about Argus C series cameras (C / C-2 / C-3 / Match-Matic) and their attributes. I would hope that those reading this would check these against any cameras they own and report any discrepancies, fill in the holes, etc. I can be contacted via the link above for questions or comments.

The easiest way to enter information for a reasonable number of cameras is the online survey, originally created by Bob and Jeff Kelly, on the 'C Series Survey' link on this site.

We have over 6,900 cameras in the database now, largely due to the steady flow of information from the website survey. Organized by serial number, the cameras have exhibited generally consistent patterns in the progression of various features, as reflected in the following summary of 'feature milestones'.

Data by Serial Number:


Prewar Cameras

Shutter speeds

10 speed 2 range 10 speed single range 7 speed
Prewar Shutter Speed Varieties

All model Cs were made with 10 marked shutter speeds, ranging from 1/5 to 1/300 second. The first Cs had a two-range shutter speed dial with a 'F-S' (fast/slow) switch below the shutter cocking lever to choose the range and two concentric ranges of speeds (five fast, five slow) on the shutter speed dial. The design was reportedly troublesome and was changed early in the line to one with all 10 speeds in a single ring and no 'F-S' switch.

A memo from IRC to its dealers from early 1938 states that the first batch of 1,000 model Cs were shipped to dealers 'to get the dealer reaction', asking the dealers not to sell them. The memo lists the new shutter design as being incorporated into 'further regular production'. Survey data suggest that between 1,500 and 2,000 cameras with the 'F-S' switch were made. In any case, they are quite difficult to find.

The first C-2s and C-3s had the same 10 marked speeds as the later model C. Both were subsequently changed to have 7 marked speeds from 1/10 through 1/300 second.

Serial numbers

Serial numbers themselves 'evolved' in this period -- both the C-2 and C-3 had two 'types' of serial number and probably switched 'types' at the same time. The first type of C-2 serial numbers continue the design and follow sequentially the range of C serial numbers.

For C-2s the serial number types are:

C-2 label serial number
5 significant digits and 'C' suffix on a glued-in label
C-2 stamped serial number
'02' prefix followed by 5 significant digits, stamped into the body below the film plane

For C-3s the serial number types are:

C-3 label serial number
'C3' prefix and 5 significant digits on a glued-in label
C-3 stamped serial number
'03' prefix followed by 5 (or possibly 6) significant digits, stamped into the body below the film plane.

For both cameras, the ranges expressed by the significant digits of the 'type 1' numbers observed are lower than the ranges of 'type 2' numbers observed.

Over the years, several sources have published ranges of serial numbers for various models of Argus cameras, including these for the prewar C series cameras:

Model Begin End
C 1001 19077
C-2 19078 91945
C-3 0310001 03690326

Survey data generally support the ranges for the C and C-2, as well as the starting point for C-3s. However, no prewar C-3 has been reported yet as having a number anywhere near '03690326'. The relatively modest size and production facilities of the company between 1939 and 1942 preclude their having produced enough cameras to account for a serial number this high. '03690326' is probably a typo, possibly intended to be '0390326'.

Lens Apertures and Labeling

There are 3 combinations of apertures and lens labeling seen among the C-2s. Chronologically, they are:

Apertures Lens Labeling
3.5, 4.5, 6.3, 11, 18 f3.5 Argus 50mm C-2 lens scale 1
3.5, 4.5, 6.3, 11, 18 f3.5 - 50mm Argus Cintar C-2 lens scale 2
3.5, 4.5, 6.3, 9, 12.7, 18 f3.5 - 50mm Argus Cintar C-2 lens scale 3

Only a few of the earliest prewar C-3s have been seen with the second combination and the rest have the third combination.


blue rangefinder yellow rangefinder
Rangefinder Tint Varieties

The Cs originally had rangefinders with no colored window and no lens in the viewing end of the rangefinder window. Later, the bottom rangefinder window had a blue filter added to make its image distinct from the top one. This change may have occurred with the introduction of the C-2 -- almost all C-2s and C-3s reported have colored windows and very few Cs have them. Some Cs, C-2s and C-3s that would be expected to have no tint or a blue colored window, have blue or yellow colored windows. It is likely that Argus added the filters to cameras sent in for rangefinder repair.

A flat lens was also added to the viewing end of the rangefinder window in the prewar period, though this feature is not currently covered in the survey. Another feature not covered is the addition of a small port on the top, with a silver cover with two small holes, to allow rangefinder adjustment without removing the rangefinder. This feature was added pretty early in C series production and cameras without the ports are quite scarce. In fact, many early cameras had their rangefinder assemblies replaced with new ones incorporating the port.


Mike Reitsma noted that the latest prewar C-2s and C-3s are slightly heavier and have just about all exposed metal surfaces heavily chrome-plated. This may be due to the replacement of aluminum in the body parts with another metal, as aluminum became a strategic metal with the onset of WWII.

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Postwar Feature Evolution

7 speed 5 speed uneven spacing 5 speed even spacing 5 speed Standard 5 speed Match-Matic
Postwar Shutter Speed Varieties

It appears that the postwar C-3s' features changed gradually and one at a time for the most part.

The colored rangefinder window changed from a blue tint to a yellow tint. There are instances of cameras in the database with yellow rangefinders before the 'earliest' shown below. It seems possible that with the high reported number of C-3s that required rangefinder adjustment, that Argus may have chosen to replace old blue windows with yellow ones at the time of repair. A survey participant who bought his C-3 in 1950 and returned it for rangefinder repair within a year or so of purchase, stated that his blue window was replaced by a yellow one. Other colors (orange, green, etc) are occasionally reported.

The biggest 'makeover' before the introduction of the Standard C-3 occurred in the mid-900,000 serial number range (possibly in 1954) when they went to 5 shutter speeds (and the 'Colormatic' settings), removed the film reminder dial from the back, added a cassette stabilizer spring inside the back door and changed the flash synch to allow X-synch for electronic flash -- although these changes didn't occur all at once.

Charles Spickard noted another change that occurred somewhat later. The rangefinder had optics added so that the image is magnified approximately one and one-half times -- prior to this the image was lifesize.

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Estimated Production Figures

To date, we know of no official production figures from Argus. One Match-Matic advertisement from 1958 states that "over two million" C-3s had been made, while another ad from August 1961 claims 2-1/2 million by that date. Survey data suggest that those numbers are inflated, even if Cs and C-2s are included. There are now enough cameras in the survey database to make some reasonable guesses as to quantities of cameras produced, at least for the more common models.

For all models except the Standard C-3 and Match-Matic, serial numbers appear to progress in an orderly chronological fashion (except for a gap in postwar cameras -- see Anomalies -- estimate adjusted for this gap). Therefore, estimates are based on ranges of serial numbers reported.

Ranges of estimates for the Standard C-3 and Match-Matic are provided. Two methods were used to estimate production. One is based on the number of these cameras reported compared to the number of postwar, pre-Standard C-3 cameras reported and the assumption that a Match-Matic or Standard C-3 is just as likely to be reported (in proportion to their relative numbers) as a postwar, pre-Standard C-3. The other is based on analysis of the times the sequential portion of the serial number 'rolls over' (reaches and passes 99999). The latter method is hampered somewhat by inconsistencies in the sequential portion, especially for Match-Matics.

C (including 'F-S' switch model) 18,000+
C-2 71,000+
C-3, 1939-1942 79,000+
C-3, 1945-1957 1,600,000+
Standard C-3 ~150,000 to ~175,000
Match-Matic C-3 ~300,000 to ~350,000
Golden Shield Match-Matic C-3 ~2,500
production illustrated 1958 - 1966
Closer analysis of serial numbers for Match-Matics indicates that roughly half the cameras ever produced were made in 1958 and 1959, and most of those were made in 1958. Apparently, the design was out of popularity sooner than its lifespan would indicate.

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metric focus scale
Two C-2s, both in the mid-4xxxx serial number range and one prewar C-3 have turned up with the rangefinder focusing scale in meters rather than feet. The dial is marked 'MTR.' instead of 'RANGE FINDER'.

Minca Cintar lens face
One prewar C-3 has been confirmed and two C-2s were reported with the lens marked 'MINCA CINTAR Made in U.S.A.' instead of 'ARGUS CINTAR'. An advertisement for a camera store has been found from a 1939 edition of 'Amateur Photographer', a British photography magazine, showing artwork of a 'Minca Model C2' (as well as a 'Minca A2F' and 'Minca Photar meter'). (Argus did make a very different camera called the 'Minca 28', but not until 1947.)

C-3 red speeds and arrows
One C-3 made shortly after WWII has shutter speeds, film counter and the arrows on the winding knobs colored red instead of black. Another prewar C-3 was reported with red arrows on the winding knobs only.

These cameras in all other respects resemble other cameras of their era.

Uncommon cameras in the C series include:

C with f-s switch
The earliest Cs, with the 'F-S' shutter speed range switch

Weston Dial Champagne color
Several prewar cameras have been found with the Weston film speed reminder dial on the back with dark letters on a 'champagne'-colored background, instead of the typical white numbers on black background.

Golden Shield Match-Matic
The Golden Shield Match-Matic

C-3 flash socket comparison
The earliest C-3s with the glued-in-label serial number. The earliest half of these cameras have larger rings around the flash sync holes.

Hidden 'argus' logo Roughly excised 'argus' logo Smoothly excised 'argus' logo
C-3s dating from around 1950 with serial numbers between roughly 542nnn and 547nnn, with a hidden 'argus' logo or evidence of a ground-off logo (see notes below Raised "Argus" logo on faceplate )

School Use Badge
Mid-1950s C-3s with a badge on top marked 'Donated for School Use by Argus Inc.' They were part of 'School Kits' gven out by Argus to high schools containing two Super 75 cameras and a C-3. These cameras are not modified in any way, other than the badge. Currently, three in survey with serial numbers in 137xxxx range, one around 147xxxx, four around 154xxxx and two around 173xxxx.

No other combination of known features appears to be particularly rare in the C series cameras.

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Among the earliest postwar cameras, odd combinations of lens labeling and aperture ranges are seen in small batches, as noted in Lens Labeling.

After the early anomalies, the postwar/pre-Standard C-3 serial numbers generally progress in an orderly chronological fashion, with a pretty even distribution across the range. However, there is currently one large gap: No cameras are found in the survey with serial numbers between 1215383 and 1327528. There are enough cameras in the survey to state with high statistical confidence that a gap roughly this size really exists and is not just an issue of a small sample size.

An undated Argus parts price list sheet notes that two models of "Rangefinder Cap" and "Rear Rangefinder Window" are available, one each of which are "for cameras prior to serial #1314000".

Two cameras have been reported with serial numbers ending in 'T'. The numbers are 629nnnT and 808nnnT. Given the numeric portion of their serial number, both would be expected to be found with 7-speed shutters and no accessory shoe. Both are reported to have 5 speed shutters and later-model accessory shoes. They may have been cameras that were refurbished at the factory and given the latest features. Known examples of Argus model 21s that had their wind mechanism updated have an 'S' suffix and many Autronics, a model with known shutter issues during its lifetime, have 'A' or 'T' prefixes.

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The "Golden Shield" Match-Matic

Golden Shield Match-Matic

The Golden Shield Match-Matic was apparently produced for the Golden Shield Corporation of Great Neck, New York, which was largely owned by Sylvania (which also owned Argus at the time). This company bought products made by other companies, badged them with their name and sold them through jewelry stores and other retail outlets. Other than cosmetics, there is no known difference between the Golden Shield Match-Matics and ordinary Match-Matics.

Thanks to E. Thomas Kraycirik for research that uncovered the story of the Golden Shield.

There are now 81 "Golden Shield" Match-Matics in the database. Their serial numbers all have one of the following patterns:

so if a "Golden Shield" is offered for sale where you can't see it, you may want to ask about the serial number -- if it looks like any of these, it may improve your confidence that you're not chasing another ordinary Match-Matic. NOTE: Ranges of lowest five digits of serial numbers of regular Match-Matics produced in last two quarters of 1960 (first five digits 18203 and 18204) overlap with those for Golden Shields of the period, so when verifying Golden Shields, make sure the first five digits are 18203. This overlap doesn't appear to occur with the 1961 cameras (18213 group).

Based on the "4th digit" code for serial numbers of cameras of the period (see Postwar serial number ranges ), the Golden Shield was made in 1960 and 1961. So far, the lowest 4 digits of all the cameras with serial numbers starting with '182137...' are higher than all the cameras starting with '182037...'. The overall ranges would suggest approximately 2,000 cameras made in 1960 and approximately 500 in 1961.

If you have any examples of advertising showing the Golden Shield Match-Matic when new, please email me.

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An interesting Argus Tech Bulletin

Excerpts from "Argus Technical Service Bulletin No. 10-12 June 1, 1961":

"In the past we have maintained a stock of replacement bodies for all early model C-3 cameras. Our supply is now permanently depleted and we are substituting the Part No. 14869 Body Assembly used for the current model Match-Matic and Standard C-3.

"With the addition of the parts listed below, this body can be used on C-3 cameras with serial number 10001 through 1740000. A special hinge with 4 holes on one half to fit the 14869 body assembly and 5 holes on the other will permit you to use the 5 hole back cover from very early models.

"C-3 cameras with serial numbers lower than 64843 that have not already been converted to the 14905 Gear Train and 14860 Shutter will require a complete updating. The 14869 Body Assembly will not accept the early style gear train."

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Data by Serial Number

Prewar serial number ranges

Model C
Feature Serial Number
Earliest with 'F-S' switch 1029C
Latest with 'F-S' switch 2741C
Latest 19041C

-- 32156C was reported from a reliable source. One anecdote suggests that Argus (or others) would remove the idler gear from C-2s or C-3s upon request for people who didn't like the coupled focusing, so this camera is most likely a modified C-2.

Model C2
Feature Serial Number Example
Earliest 'type 1' serial number 19747C C-2 label serial number
Latest 'type 1' serial number 62258C C-2 label serial number
Earliest 'type 2' serial number 02 62388 C-2 stamped serial number
Latest 'type 2' serial number 02 90672 C-2 stamped serial number

There are now 19 C-2s in the database, all having generally similar features, with serial numbers with '00' prefixes and values between 0082104 and 0084108. Another example, 0062336, fits into the current gap between the 'type 1' and 'type 2' serial numbers.

Model C3
Feature Serial Number Example
Earliest 'type 1' serial number C3 10003 C-3 label serial number
Latest 'type 1' serial number C3 23678 C-3 label serial number
Earliest 'type 2' serial number 03 23848 C-3 stamped serial number
Latest 'type 2' serial number 03 90242 C-3 stamped serial number

(See notes about Prewar Cameras above)

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Postwar serial number ranges

1945 - 1957:

The first cameras made when civilian production resumed in 1945 started with 0nnnn and proceeded upward from there to 1740000 in 1957. However, it appears that the first several thousand cameras that would have started from 100000 had the leading '1' omitted from the serial number, so they appear as a five-digit number between 00000 and around 12000.

Cameras with a five-digit serial number between 00000 and 12000 with the following set of features are accurately numbered and were probably made in 1945 or early 1946:

Early postwar lens labeling silver shutter cocking lever

Cameras with a five-digit serial number between 00000 and 12000 with the following set of features are missing the leading '1' in their serial numbers (add 100000 to get the correct number) and were probably made in late 1946 or early 1947:

Later postwar lens labeling black shutter cocking lever

Thus, the earliest camera listed below is the lowest currently known serial number on a camera with features consistent with a valid five-digit serial number, as noted above.

Thanks to Curtis Riddick for information that helped solve the riddle of the earliest postwar cameras.

C-3 - Postwar, Pre-Standard (1945-1957)
Feature Serial Number
Earliest 04152
latest stamped inside rightside up 786671
earliest stamped inside upside down 788400
Latest 1737375

1958 - 1966:

An article in the Michigan Photographic Historical Society's publication, "The Photogram", apparently dating from the late 1970s, cites a local source (probably Don Wallace or Milt Campbell) on the subject of Argus serial numbers of the period. It states that from 1958 on, Argus cameras with ten-digit serial numbers (including all C-3s of the period) have a common coding pattern. The first three digits of the serial number are the model of the camera (182 for Match-Matics, 192 for Standards), the next two digits represent the year quarter and year and the final five digits are the "unique" portion of the serial number.

Survey data and patterns observed in other Argus cameras of the same period support the fourth digit being the year and the fifth being the year quarter. Some survey comments suggest cameras with serial numbers starting with 18283... and 18293... date from the late 1950s. Observed fourth digits range from 8 (1958) through 6 (1966). None have been seen so far with a fourth digit of '7'. Fifth digits are overwhelmingly between one and four. The 'unique' portions of the serial number generally move upward as expected as the years and quarters change.

However, published information states that serial numbers for Match-Matics start from 1821800001. Analysis of the data suggests that the earliest cameras follow this pattern as the Photogram article suggests. Thus, the earliest Match-Matics have serial numbers beginning with 18218... and 18228..., and the earliest Standard C-3s have 19218... From the second quarter of 1958 on, the cameras switch to the format with year as fourth digit and quarter as fifth digit.

Anomalies do exist in the database, but in small 'batches' that suggest temporary deviations in the serial number coding standard. These kinds of anomalies are seen in ranges of C-3s of prior years as well as in other models. Argus' repair service would convert Match-Matics to Standards and vice versa for a nominal fee, so that could explain instances of cross-model numbers.

Standard C-3s and Match-Matics (1958-1966)
Feature Serial Number
Earliest Standard C-3 1921800692
Latest Standard C-3 1926173963
Earliest Match-Matic 1821800056
Latest Match-Matic 1826476520

-- a few Match-Matics reported starting with '282...', '192...', '184...' and '162...'.

Relative numbers of survey responses suggest that about twice as many Match-Matics as Standard C-3s were produced. (See notes about Estimated Production Figures above)

Golden Shield Match-Matics
Feature Serial Number
Lowest "Golden Shield", Range 1 1820372503
Highest "Golden Shield", Range 1 1820374361
Lowest "Golden Shield", Range 2 1821374400
Highest "Golden Shield", Range 2 1821374886

(See "The Golden Shield" above)

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Shutter Speeds

Feature Serial Number Example
Latest 10 Shutter Speeds 02 70838 10 speed single range
Earliest 7 Shutter Speeds 02 70902 7 speed

C-3 (prewar)
Feature Serial Number Example
Latest 10 Shutter Speeds 03 41907 10 speed single range
Earliest 7 Shutter Speeds 03 42138 7 speed

C-3 (postwar)
Feature Serial Number Example
Latest 7 Shutter Speeds 964476 7 speed
Earliest 5 shutter speeds (uneven spacing) 965240 5 speed uneven spacing
Latest 5 shutter speeds (uneven spacing) 1058973 5 speed uneven spacing
Earliest 5 shutter speeds (even spacing) 1059490 5 speed even spacing

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Lens apertures

Feature Serial Number Example
Latest 3.5, 4.5, 6.3, 11, 18 54724C C-2 lens scale 2
Earliest 3.5, 4.5, 6.3, 9, 12.7, 18 54448C C-2 lens scale 3

C-3 (prewar)
Feature Serial Number Example
Latest 3.5, 4.5, 6.3, 11, 18 C3 14883 C-3 lens scale 1
Earliest 3.5, 4.5, 6.3, 9, 12.7, 18 C3 14334 C-3 lens scale 2

C-3 (postwar): This is a very mixed bag in the first 100,000 or so cameras produced after the end of World War II. They start out with the prewar numbers (3.5, 4.5, 6.3, 9, 12.7, 18) but mixed in with these are cameras with the scale they settled in with around 1947 (3.5, 4, 5.6, 8, 11, 16). This was probably a result of only being able to get small batches of parts at a time due to postwar shortages. See notes about Lens Labeling below.

C-3 (postwar)
Feature Serial Number Example
Latest 3.5, 4.5, 6.3, 9, 12.7, 18 71115 Postwar aperture scale 1
Earliest 3.5, 4, 5.6, 8, 11, 16 42129 Postwar aperture scale 1

There are a couple of groups of outliers after 71115 with aperture scale 3.5, 4.5, 6.3, 9, 12.7, 18, with all other features as expected -- one group in the early 90000s and one in the early 150000s.

Match-Matics: 3.5, 4, 5, 6, 7, 8

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Lens labeling

Feature Serial Number Example
Latest "f/3.5 Argus 50mm" 41320C C-2 lens label 1
Earliest "f/3.5 - 50mm Argus Cintar" 40254C C-2 lens label 2

-- (overlap noted)


Prewar C-3s: "f/3.5 - 50mm Argus Cintar".

Postwar C-3s:

Labeling is really mixed for the first cameras produced after WWII, possibly due to material shortages causing only small quantities of parts to be produced. Combinations of labeling and apertures through 73329 include:

Lens label Apertures coated/uncoated Example
"f/3.5 - 50mm Argus Cintar" 3.5, 4.5, 6.3, 9, 12.7, 18 uncoated Postwar labeling combo 1
"f/3.5 - 50mm Argus Cintar" 3.5, 4.5, 6.3, 9, 12.7, 18 coated Postwar labeling combo 2
"f/3.5 - 50mm Argus Cintar" 3.5, 4, 5.6, 8, 11, 16 coated Postwar labeling combo 3
"f/3.5 - 50mm Argus Coated Cintar" 3.5, 4.5, 6.3, 9, 12.7, 18 coated Postwar labeling combo 4
"f/3.5 - 50mm Argus Coated Cintar" 3.5, 4, 5.6, 8, 11, 16 coated Postwar labeling combo 5

pre - Standard C-3s from 74436 on: "f3.5 - 50mm Argus Coated Cintar"

Standard C-3s and Match-Matics: "Argus 50mm f3.5 Coated Cintar"

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What is on the back door

Feature Serial Number Example
Latest with 3 leatherette strips 62258C 3 leatherette strips
Earliest Weston filmspeed reminder dial 02 62388 Weston filmspeed reminder dial

This feature seems to occur at the same time as the change in serial number 'type' in the C-2, but not the C-3.

C-3 (prewar)
Feature Serial Number Example
Latest with 3 leatherette strips 03 25082 3 leatherette strips
Earliest Weston filmspeed reminder Dial 03 25331 Weston filmspeed reminder Dial

C-3 (postwar)
Feature Serial Number Example
Latest Weston filmspeed reminder Dial 256876 Weston filmspeed reminder Dial
Earliest ASA filmspeed reminder dial 257056 ASA filmspeed reminder dial
Latest ASA filmspeed reminder dial 937605 ASA filmspeed reminder dial
Earliest no dial/3 strips 932583 no dial/3 strips
Latest no dial/3 strips 1660498 no dial/3 strips
Earliest solid leatherette back 1659191 solid leatherette back

-- some contiguous examples between 9363xx and 9374xx reported with ASA filmspeed reminder dial. All cameras (currently) starting at 937669 have no dials.

-- numerous examples between 1603xxx and 1654xxx reported with solid backs.

-- See Rarities above for an example of the uncommon 'champagne'-color Weston dial.

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C-2 Shutter releases

Feature Serial Number Example
Latest "type 1" shutter release 46544C type 2 shutter release
Earliest "type 2" shutter release 46818C type 2 shutter release

The Kalart Confidential Dealer Price List of Sept. 1, 1946 lists a synchronizer adapter (presumably to connect to the shutter release) for Argus C and C2 cameras "with Serial No. up to 47,201". This is probably when the change from "Type 1" to "Type 2" occurred, since the "Type 2" shutter releases had a standard cable release thread that wouldn't have required an adapter.

Shutter Cocking lever (postwar C-3)

Feature Serial Number Example
Latest silver shutter cocking lever 45605 silver shutter cocking lever
Earliest black shutter cocking lever 45242 black shutter cocking lever

-- a lot of overlap on both sides of this one.

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Rangefinder tint (postwar C-3)

Feature Serial Number Example
Latest blue rangefinder 385859 blue rangefinder
Earliest yellow rangefinder 386125 yellow rangefinder

-- this refers to the earliest serial number from which point all cameras in the database have yellow rangefinders

Raised "argus" logo on faceplate (postwar C-3)

argus body logo
Feature Serial Number
Latest without raised "argus" logo 549001
Earliest raised "argus" logo 548749

-- Some cameras between 542nnn and 545nnn found with a recessed "argus" logo, in the same style and location as the later logo but flush with the metal camera faceplate and hidden under the leatherette. Others found between 546nnn and 547nnn with ground-down areas indicating some kind of logo was obliterated. It apparently took Argus a few tries to get the desired look. See Rarities above for examples.

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Film counter dial (postwar C-3)

Feature Serial Number Example
Latest silver metal film counter 583082 silver counter dial
Earliest black plastic film counter 581218 black counter dial

(although they resumed using silver counters with Match-Matics)

Back hinge screws (postwar C-3)

Feature Serial Number Example
Latest 10 back hinge screws 597892 10 hinge screws
Earliest 8 back hinge screws 598165 8 hinge screws

-- small outcroppings in the 693nnn and 872nnn-873nnn vicinities also have 10. A replacement hinge with 5 holes on one side and 4 on the other was supplied by Argus to allow older doors on newer bodies (and perhaps vice-versa).

Accessory shoes (postwar C-3)

Feature Serial Number Example
Latest with no accessory shoe 1339820
Earliest aluminum (3-screw) accessory shoe 1340685 3-screw accessory shoe
Latest aluminum (3-screw) accessory shoe 1489587 3-screw accessory shoe
Earliest plastic (1-screw) accesssory shoe 1489380 1-screw accessory shoe

-- Examples of accessory shoes occur frequently on earlier cameras; these are mostly aftermarket modifications. "Earliest" refers to the earliest serial number from which point all cameras in the database have the indicated style of accessory shoe, except for the overlap between the latest 3-screw shoe and the earliest 1-screw shoe.

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