Hamilton 4992B Question

Discussion in 'American Pocket Watches' started by Dutto11, May 23, 2011.

  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  1. Dutto11

    Dutto11 Registered User

    Jul 12, 2006
    729
    4
    18
    Designer, Engeering
    Brisbane, Australia
    Country Flag:
    Region Flag:
    Hi Friends,
    I have a Hamilton 4992b that I recently picked up and got running again and it has a 12 hour dial.
    My question is did they come out of the factory this way or were they, for want of a better term, Converted over from the 24 hour "GCT" to a more common 12 hour version like mine.
    I have read this happened after the war ended and there were a surplus of watches so the made the change to sell to the general public.
    Part two to my question is what parts were changed to make the hands move to match the conventional 12 hour dial.
    Thanks
    Gary
     

    Attached Files:

  2. terry hall

    terry hall Registered User
    NAWCC Brass Member

    Apr 12, 2001
    6,934
    266
    83
    Male
    Central North Carolina
    Country Flag:
    Region Flag:
    imho... not factory... it would then be a 3992B, correct?

    hour and minute wheels were part of the conversion...

    there have been reports of the 'kits' but i don't recall any factory info on them posted:???:

    believe there are some threads on here accessible with search....
     
  3. Don Dahlberg

    Don Dahlberg Registered User
    NAWCC Member

    Aug 31, 2000
    3,425
    12
    38
    As Terry said, Hamilton produced a 3992B for the British Navy. This was a 12 hour watch. So it was easy to convert a 4992B to 12 hours after the war. The conversion consisted of a new hour wheel, minute wheel and a minute wheel post. The dial and hands were also changed. Some people replaced the back cover.

    The question is, who made the conversion kits? Rumor has it that Hamilton sold them, but I have never found any evidence of this in Hamilton records.

    Don
     
  4. Dutto11

    Dutto11 Registered User

    Jul 12, 2006
    729
    4
    18
    Designer, Engeering
    Brisbane, Australia
    Country Flag:
    Region Flag:
    Thanks gents,
    I suppose I should have done the search myself and found a heap of information but being a bit slow today I never thought of it.
    Gary
     
  5. Robert Sweet

    Robert Sweet Registered User

    Apr 29, 2004
    2,965
    192
    63
    Country Flag:
    Below is an article from a "Jewelers' Circular", 1947, which may be of some interest about the 4992B conversion.

    Robert
     

    Attached Files:

  6. Kent

    Kent Registered User
    Gibbs Literary Award NAWCC Fellow NAWCC Silver Member

    Aug 26, 2000
    18,278
    1,466
    113
    Country Flag:
    Nice find Robert, thanks for posting it!
     
  7. terry hall

    terry hall Registered User
    NAWCC Brass Member

    Apr 12, 2001
    6,934
    266
    83
    Male
    Central North Carolina
    Country Flag:
    Region Flag:
  8. Larry Treiman

    Larry Treiman Registered User

    Jan 18, 2009
    3,293
    55
    48
    Tired and retired!
    So. Calif.
    Robert, our apparently inexhaustible fount of information, has come through for us once again.

    Thanks, Robert, for this latest example of your fascinating finds!

    Larry Treiman
     
  9. Dutto11

    Dutto11 Registered User

    Jul 12, 2006
    729
    4
    18
    Designer, Engeering
    Brisbane, Australia
    Country Flag:
    Region Flag:
    Well done Robert and thanks.
    I was also wondering if someone can provide a date for this serial number 4C57291.
    Gary
     
  10. Robert Sweet

    Robert Sweet Registered User

    Apr 29, 2004
    2,965
    192
    63
    Country Flag:

    1944

    Robert
     
  11. Dutto11

    Dutto11 Registered User

    Jul 12, 2006
    729
    4
    18
    Designer, Engeering
    Brisbane, Australia
    Country Flag:
    Region Flag:
    Thanks again
     
  12. Kent

    Kent Registered User
    Gibbs Literary Award NAWCC Fellow NAWCC Silver Member

    Aug 26, 2000
    18,278
    1,466
    113
    Country Flag:
    #12 Kent, Nov 30, 2014
    Last edited: Nov 30, 2014
    I thought that I'd update this thread with a 1947 ad for surplus 4992Bs I just came across that notes that the dial was converted to a 12 hour dial.
     

    Attached Files:

  13. Larry Treiman

    Larry Treiman Registered User

    Jan 18, 2009
    3,293
    55
    48
    Tired and retired!
    So. Calif.
    #13 Larry Treiman, Dec 1, 2014
    Last edited by a moderator: Dec 1, 2014
    After studying the Marks ad posted above (post #12) by Kent, th reader should scroll back to Robert Sweet's post #5 in this thread and read that article from Hamilton on the 4992B conversions, as published in the "Jewelers' Circular".

    It is quite apparent that it probably was ads like the Marks ad that prompted Hamilton to release the 4992B conversion information through the trade magazine.

    Larry

    EDIT: I just checked the Hamilton Permanent ("Sticky") threads and this thread does not appear to be among them. Questions about the originality of these 4992B conversions to 12-hour dials come up with sufficient frequency, and this thread includes enough valuable information on the subject, to justify including it with the Hamilton 4992B Permanent threads, IMHO.

    LT



    Larry, I added it to the sticky's !
     

Share This Page