Which crystal for 16000 datejust

[gasdoc]

I need to order a new crystal for a franken 16000 datejust. Can anyone tell me which one to order from clarks? I didn't have time to measure it or do research, and figured someone might know off the top of their head.

Thanks!

[jmb]

Plexi 25-135 should fit...

[mymanmatt]

correct, unless it's a 16200 series, then sapphire crystal. Clark has them both, and they both fit nicely.