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Thread: Omega 6B/159 case back engraving

  1. #1
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    Default Omega 6B/159 case back engraving

    I was looking at an Omega 6B/159 on eBay and the case back is engraved 6B/159 A6467. I always thought a legitimate engraving should have 5 digits after the A. Is an engraving with only 4 digits correct?

    Also can anyone give me a known range of movement serial numbers and case back engravings for the Omega 6B/159. Thanks.

    Here is the auction I was referring to:














    Last edited by dave; 09-12-2017 at 12:31. Reason: removed link and inserted images.

  2. #2
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    I bet someone will be cross that you posted that! You'll possibly introduce competition against your potential bid.

    Anyway, I think it looks fine. Reference 2292 case back. Lugs have been shorted on one side which is common.

  3. #3
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    Thanks rodabod, I wasn't thinking about bidding as like you I thought the lugs at one end had been shortened. I was just interested in whether a 4 digit issue number was ok - also there's a big gap between the A and the first digit.

  4. #4
    Member isologue's Avatar
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    I have seen 4-digit serials on both Longines and Omega. There tends to be a broad arrow on the 2292 cases and A.M. on the rest - obviously a transition point c 1943/44 because you see 4-digit numbers associated with both styles of marking.
    Very roughly, 97xxxxx I take to be solidly 1943; 98xxxxx 1943/44; 99xxxxx and 10xxxxxx I put at c 1945 for the 6B/159 (although Dennison cased movements with those numbers will often be civilian market surplus supply c 1947). There is room for some refinement in those numbers so take that as a rough guide.
    Regards,
    Martin (isologue)
    P.S. If you weren't bidding, it might have been doubly appropriate to post after the auction had finished. Just in case.

  5. #5
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    Thanks Martin that's very helpful.

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