Any of the editions from the 60's. Long shot I know. But if you have a Seiko Yacht Timer am all ears as a back up. Thanks as ever OF for the space!
Very interesting. I assume you've already seen this but maybe other people will find it useful. http://www.heuerchrono.com/seaboard-yacht/
Seiko Yacht Timer Very familiar. Love Henrik and this site. He does an amazing job! Definitely worthy of a mention and glad you linked it in. My first addiction was the Skipper and this site got me hooked.
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Sure thing. Case is very impressive in the flesh. Much better than I ever thought. The subdial is amazing.