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  1. #1
    Registered User Steven Barnett's Avatar
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    Default Hamilton Model 22 Serial Number Query

    Greetings:

    Can anyone tell me the approximate date of manufacture on Hamilton Model 22 chronometer watch serial number 2F8122?

    THX - Steve

  2. #2
    Registered User doug sinclair's Avatar
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    Default Re: Hamilton Model 22 Serial Number Query (By: Steven Barnett)

    Welcome,

    I Marvin Whitney's book on the marine chronometer, he indicates that in 1941, Hamilton delivered 2,864 gimballed chronometers, and in 1942 they delivered 5,667 of them. I suspect yours is from 1942, possibly 1943. I was unable to pin down the date specifically by searching the Hamilton data base.

  3. #3
    Registered User Steven Barnett's Avatar
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    Default Re: Hamilton Model 22 Serial Number Query (By: doug sinclair)

    Thank you sir!

    I just acquired this piece, complete with outer box and shipping container. Itís in remarkably good shape, with a Navy overhaul required tag dated 1978. Must have been in service for a long time!

    Cheers - Steve

  4. #4

    Default Re: Hamilton Model 22 Serial Number Query (By: Steven Barnett)

    From the ledgers, your M22 was finished and shipped in November 1943.
    Member: NAWCC Chapter 58, 149
    Website: http://rrstd.com

  5. #5
    Registered User Steven Barnett's Avatar
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    Default Re: Hamilton Model 22 Serial Number Query (By: rrstd)

    Thank you - as a follow up, does anyone know of source for an appropriate replacement main spring? Since I have no idea when the watch was last serviced, I plan of doing one myself. I'd love to put a new mainspring in just on GPs.

  6. #6

    Default Re: Hamilton Model 22 Serial Number Query (By: Steven Barnett)

    any information about s/n 2F8131 welcome

    Hans.

  7. #7
    Registered User doug sinclair's Avatar
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    Default Re: Hamilton Model 22 Serial Number Query (By: hjpetsch)

    Welcome,

    Your chronometer serial number is 9 digits after that of the subject chronometer. A check of the Hamilton ledger page indicates it was finished on July 15, 1943, several months after the subject chronometer was finished. The rest of the entry for your chronometer in the ledger has been edited, scribbled out, then over-written so many times it is not possible to make any sense of the entry. What other information might you be seeking?
    Last edited by doug sinclair; 01-29-2012 at 07:43 AM.

  8. #8

    Default Re: Hamilton Model 22 Serial Number Query (By: doug sinclair)

    Thanks, Doug, this is already very valuable information for me.
    I just obtained the clock in Madrid, Spain.
    I do not think, you would be able to track it to a specific ship, though.


    About the serial numbering system: does 2F.... meaning anything?

    But thanks a lot!
    Hans.

  9. #9
    Registered User doug sinclair's Avatar
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    Default Re: Hamilton Model 22 Serial Number Query (By: hjpetsch)

    In issue # 300, NAWCC Bulletin publication, page 110, the foremost authority on Hamilton military timepieces, the late Marvin Whitney, indicates the number and letter prefix to the unit serial number was Hamilton's way of identifying the model or grade of a particular watch or chronometer. This seemingly started with the Hamilton 992B circa 1941. 2F xxxx signifies a model 22, either boxed chronometer or chronometer watch.

  10. #10

    Default Re: Hamilton Model 22 Serial Number Query (By: doug sinclair)

    ... thanks again!
    By the way: I am in possession of Marvin E. Whiney's work "The Ship's Chronometer", serialized as No. 92 and hand signed by the author.

    Hans.

  11. #11
    Registered User doug sinclair's Avatar
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    Default Re: Hamilton Model 22 Serial Number Query (By: hjpetsch)

    I have it as well. Mine is # 224. Also signed by Marvin.

  12. #12
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    Default Re: Hamilton Model 22 Serial Number Query (By: Steven Barnett)

    Quote Originally Posted by Steven Barnett View Post
    Thank you - as a follow up, does anyone know of source for an appropriate replacement main spring? Since I have no idea when the watch was last serviced, I plan of doing one myself. I'd love to put a new mainspring in just on GPs.
    Can I suggest that you pay a visit to:

    www.militarywatchmuseum.com

    where I think that you will find a lot of valuable information and a source of parts.

  13. #13

    Default Re: Hamilton Model 22 Serial Number Query (By: DaveyG)

    I also just acquired a gimbal mounted model 22, and hopefully someone here can shed some light on the serial number....2F7706

  14. #14

    Default Re: Hamilton Model 22 Serial Number Query (By: birdyxxx)

    Finished and sold 8/26/1943 to code# 64-10329 we have not cracked the code for sold to.... yet.

    no information on how it was originally configured. .with gimbal, cased in wooden box... etc...
    total production listed @ just over 28,000 movements.

  15. #15

    Default Re: Hamilton Model 22 Serial Number Query (By: terry hall)

    Thank you! The chapter ring, case, and caseback all have matching numbers (6165). The chapter ring is labeled with the US Navy "overhaul due" tag, marked serial number 6165, and "1957" is the date of the next overhaul required. It is cased in the hinged box, however I am missing the larger outer case with the handles on the sides. If you or anyone cracks the code to find out where my 22 spent its service time, let me know!
    Last edited by birdyxxx; 09-20-2016 at 10:11 AM.

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