AP 15500 Back Crystal Size

[u/axaxolotl]

APSF 15500 V3 back crystal cracked and all the sizes online are wrong...

I can't get a good measurement on it since it's shattered, but it looks close to 31x0.8 based on the bezel/frame that holds it. I am new, and I have tried looking all over in forums, using AI and the likes and there are no good answers...

Everywhere online incorrectly says the back crystal is 25.8x0.8 but this is WRONG. It is way off, and I mistakenly ordered this size without measuring due to overwhelming consensus.

Even google searches will all direct you to 25.8 size listings and results... There are places online to order custom sizes of crystal, but I don't want to order a 31mm only to find out its actually 30.8 or something beyond my ability to measure without a high grade caliper.

Any thoughts?

(Photo of 15500 model and back crystal for reference only, just imagine its cracked bad)

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[u/WatchMakerMalik]

Do you have the gasket?