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  1. jimmyd13 Jul 2, 2019

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    Quick introduction: I have the crown, below, in my parts box. I had thought it was correct for a late 50's Seamaster 300 (CK2913) but now I'm not at all sure. Can anyone conclusively identify this crown?
    667095-adaca035919eecb4dbde54acadbc6f34.jpg 667096-42f0f0cf3fc34ec7c0a671797835c69f.jpg
     
  2. mac_omega Jul 2, 2019

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    You should let us know the thread size
     
  3. jimmyd13 Jul 2, 2019

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    That's something I'm going to struggle with - I have nothing to measure and no threaded bar that small that I already know the size of. :(
     
  4. mac_omega Jul 2, 2019

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    Can´t you use windings stems of your watches where you know the size or messure with a caliper? I think it will be important to know this parameter in order to make an educated guess.
     
  5. jimmyd13 Jul 2, 2019

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    I shall endevour! It can only be 0.9 or 1.0mm, right?
     
  6. athom Jul 2, 2019

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    C1 model no? The C1 had these flat feet and the mercedes logo
     
  7. mac_omega Jul 2, 2019

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    It could also be 1.2 mm if it were for a Railmaster (cal. 284 or 286)