Hello,
Thanks again to everyone who helped me identify my watch as a Longines Scuba Diver (Nautilus T-910 watch. I'm looking for a replacement Longines crystal for the watch, NOS, if possible. The current acrylic crystal on the watch is badly scratched and needs to be replaced. Its round crystal and appears to measure 30mm and is called_-I think__ a high domed crystal (The case measures 40mm across if that matters.) Can anyone suggest a source for this diver crystal? Below is the link in which the watch appears in an old advertisement. And I have uploaded a couple of pics as well. Thanks in advance. Peace, Michael (If this is not the right place for this question, please advise.)