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HAMILTON "4C PREFIX" AND "S PREFIX" 992B POST-PRODUCTION DATABASES "Click" to Login or Register 
IHC President
Life Member
Picture of Lindell V. Riddle
posted

HAMILTON "4C PREFIX" 992B CONTINUING DATABASE


Everyone,

After the production lines were shut down at the end of 1969 there were still requests from dealers for Railroad Pocket Watches. So during 1970 a limited number of Hamilton "4C Prefix" numbered 992B examples were assembled housed in Model 15 Stainless Steel, Model 16 Rolled-Gold-Plate and Gold-Filled Model 17 cases, only Models 15, 16 and 17 cases were used in this project. Unlike more than 525,000 conventional 992B movements with a "C Prefix" number these were assembled using previously jeweled pillar plates with "4C Prefix" numbers which were left-over from the last US Government Contract 4992B movements which had been manufactured during the 1960s making these one of the more uncommon and unusual 992B watch variants. These are of interest to collectors for a variety of reasons and so we present the accompanying data.

Parenthetically, the last Government Contract for 4992B watches dates to a 1959 contract numbered DA-36-038 and I have 4C139516 with U.S.A.F. case-markings which is a completed 4992B from that same grouping.

How many of these post-production 4C Prefix 992Bs were put together is anybody's guess. A former Hamilton employee who was involved in the project told me he thought there may have been at most "a few hundred" assembled from material they pulled from the vaults, but we do know this for certain, they are interesting and uncommon items.

The ones listed below have similarly numbered cases to other late 992Bs but you can also see from this list the factory obviously paid no attention to chronology of either the movement or case numbers. And since these watches were put together using left-over material we can draw no conclusion from the numbers as to the total cased and sold, the movement numbers are merely numbers and the watches were not assembled in any particular order.

Note on Movement Numbers: The movement number range in the table below (4C144280-4C149950) corresponds to some 5,000 numbers and since the 1970 post-production run is estimated to be far less than 1,000 this indicates that perhaps 4,000 leftover 4C-marked pillar plates in that number range (many collectors have retained a few consecutively numbered plates out of curiosity) were scrapped or sold off as parts, many of those were used to rebuild or repair watches by various entities and individuals. So exercise care in buying and make sure any 4C 992B you buy has a credible movement and case number combination that reasonably fits with those listed below. These post-production watches command premium prices and are highly sought-after by discerning collectors.


Here we have been gathering data to provide some comparisons...


4C144280 in Case 17 number P670933 (NOS and lowest number documented example)

4C144369 in Case 17 number P621538

4C144434 in Case 17 number P621855

4C144515

4C144552 in Case 17 number P297774

4C144599 in Case 17 number P621937

4C144601 in Case 17 number P561933

4C144612 in Case 17

4C144696 in Case 17 number P670660

4C144792 in Case 15 number P583194

4C144836

4C144892 in Case 17 number P671099

4C144920 in Case 17 number P297697

4C144935 in Case 17 number P297563

4C144942

4C144962 in Case 17 number P561739

4C145137 in Case 17 number P585844

4C145217 in Case 15 number P584028

4C145238

4C145333 in Case 17 number P626845

4C145663 in Case 15 number P583121

4C145715 in Case 17 number P561789

4C145733 in Case 15 number P584026

4C145737 in Case 15 number P583297

4C145923 in Case 17 number P561967

4C145949

4C145996 in Case 17

4C146028 in Case 17 number P621749

4C146274 in Case 16 number P296504

4C146237 in Case 16 number P296484

4C146243 in Case 17

4C146398

4C146457 in Case 17 number P586879

4C146493 in Case 17 number P561506

4C146586

4C146521 in Case 16 number P560203

4C146622 in Case 17

4C146708 in Case 17 number P670598

4C146839 in Case 17 number P671033

4C146904 in Case 17 number P621858 (NOS)

4C147007 in Case 17 number P586512

4C147117

4C147204 in Case 17

4C147220 in Case 17 number P586504 (1970 Presentation)

4C147353 in Case 17 number P297279

4C147538

4C147489 in Case 15 number P583368

4C147702 in Case 17

4C147149

4C147629

4C147830

4C147831 in Case 17 number P621959

4C148046 in Case 15 number P584255

4C148300 in Case 15 number P513346

4C148457 in Case 17 number P670467

4C148505 in Case 17 number P585813 (Million Mile Presentation dated July 1970)

4C148521 in Case 17 number P297394

4C148557 in Case 15

4C148616

4C148683 in Case 15 number P583305

4C148228 in Case 17

4C148811 in Case 17 number P296235

4C148959

4C149950


We have just over 60 movements documented here, out of the "maybe a few hundred" they hand assembled.

(Last Updated in February of 2018)

Anyone with additional 4C or S-Prefix 992B numbers to share, please eMail them to...

<ihc185@roadrunner.com>

Lindell

Wink


The "4C" Prefix 992B movements are interesting...


 
Posts: 10526 | Location: Northeastern Ohio in the USA | Registered: November 19, 2002
IHC President
Life Member
Picture of Lindell V. Riddle
posted

HAMILTON "S PREFIX" 992B CONTINUING DATABASE


Of even greater rarity are the very few "S-Prefix" 992B examples that should be carefully considered. Indeed some correct "S-Prefix" 992B examples assembled on left-over 950B pillar plates, they are real, they really do exist and now we are listing the numbers we find for those here as well. Like the 4C-Prefix 992B examples above, these too were put together from leftover parts, in this instance apparently less than a hundred of these were assembled in the very early 1970s employing previously jeweled pillar plates with "S-Prefix" numbers which were left-over from 950B production (Hamilton's 950B was discontinued in the mid-1960s) placed in movement trays and stored in the Hamilton vaults. Shown below are the "S-Prefix" numbers we have at this point and we will continue to update the list below as additional examples surface.


Here we have gathering data to provide some comparisons...


S29541

S29556

S29573 in Case 17 number P078102 (GB)

S29624

S29683

S29689

S29694 in Case 16 number P379351 (TD)

S29790

S29817 in Case 17 number P297651 (EP)

S29839

S29842

S29974

S30055 in Case 15 number P025118

S30123 in Case 17 number P885318

S30125 in 14K• Case 17 number P164746 (LVR)

S30202 in Case 15 number P024529 with 12-25-70 engraving


(Last updated July of 2014)

Anyone with additional 4C or S-Prefix 992B numbers to share, please eMail them to...

<ihc185@roadrunner.com>

Lindell

Wink


S30125 post-production 992B built on a 950B pillar plate...


 
Posts: 10526 | Location: Northeastern Ohio in the USA | Registered: November 19, 2002
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