• Thanks guys, yes its a 256. Serial Nr 25, bought 20 years ago. I am not that young anymore I guess.
    Had seen a Heuer Bundeswehr which it is based on and the smaller size is just nicer on my wrist. Haven't worn watches in 10 years, the Sinn goes to Frankfurt soon for a full service and to see if they have a spare bezel for the future.

    Also need to decide where to bring those two for a service:

  • Well I wish I had the prescience to buy that twenty years ago, kudos for not battering it in your youth. I’m a big fan of the Sinn 156/ Bell Ross M1(with the thicker Lem 5100) but it’s so much chunkier I doubt my wrist could pull it off. Not sure when I’ll ever get to try one to find out.
    Sorry can’t really help with servicing, if you’re in London Alsal have an honest rep round here.

  • The 156 is also really nice.
    The watch is unbattered because I also had the omega seamaster that came to me battered (crown missing and bezel all worn) to wear.
    Only thing a bit odd with the 256 is the bezel that doesn't click it just turns freely.

    And on the service front, just did one more Google and found a watchmaker around the corner here in Berlin.
    Father and sons, in business since 1967. Went and had a pleasant chat and left one watch.

    Who would have thought that a shop called Istanbul watches that looks like they can fit a strap makes such a good impression?
    Really happy they have a new homepage so I found them.

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