Hi all, I've got a steel cased ref 14767-1, cal 491 with a cracked crystal that I'm looking to replace. I think I figured out through googling that the OEM crystal I would want to buy is part PZ5000. I am wondering if there is a good reference to figure out if that's the correct part, and also if there are any aftermarket alternatives and how to figure out which I would need if so. Thanks for any help! Photos because why not. Unfortunately I don't have a caseback opener, but the ref and cal above I wrote down from the actual movement & caseback when I did have it open previously.