Quote:
Originally Posted by Strats-N-Vettes
Watch is 1988, crystal changed in 1989 or 90.
The crystal is in the watch box.
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The Submariner date went to a sapphire crystal in 1979. The only Submariner with a plastic crystal by 1988 was the no date Sub. So if your watch is a 1988 and it still had an acrylic crystal, it was either a no date Sub, or you had a sapphire crystal.