G-S 23-1/2 glass? watch crystal.

[rustybronco]

I broke the round glass wrist watch crystal on my Benrus calendar watch trying to snap the case shut by hand. Yes I know stupid on my part but things happen. I'll purchase a case closer next.

What i'm trying to find a replacement glass crystal for it

The case opening measures 1.088" (27.63mm) and the old glass crystal's o.d. is 1.090 (27.68mm) as far as I can tell. I think best go with a 27.6mm  at this point. The old crystal has a dome height of .153 (3.88mm) and the base has a inward taper that looks to be around 30 degrees where it fits the bezel. Are the 23-1/2 glass crystals you find of a similar height to what I've listed?? The replacement crystal I purchased for my Elgin streamline (12S) looks to be of similar construction and shape is the reason I ask.

 

Thanks for any help,

Dale