Hi!

New member and hobbyist learning about servicing watches here. I have been playing with a half dozen scrap 11AFC movements and am ready to dig into a 1959 Seabee.

I am hoping someone can tell me the correct crystal for a 1959 Seabee? I have read that the diameter should be 28.2 to 28.3 mm but the one on the watch measures 28.45 mm with the rim of the case measuring 27.5 mm. It also has tons of cracks around the edges or I would reuse it. I have dug through half a dozen old GS catalogs but am coming up dry. (I know, lousy pun)