I have a 1941 Watertight I recently purchased on eBay and brought back to life, identical to this one with the 10AX movement: Bulova Models | myBulova.com
Does anyone happen to know the crystal it takes?. It is one of those with the bezel ring that presses down around the crystal.
I recently acquired a similar crystal for another Bulova, but it was 28.3mm and was the 1112 E-1 crystal. This one is a few mm smaller.
This one is 25.95 mm in outside diameter. I looked all over, but the closest thing I could find that has the required diameter is listed for a Girard Perregaux.
I reckon I'll see when it arrives.