I am in the process of servicing a Bulova (EDITED to replace with actual model info) 1971 Deep Sea Chronograph. It needs a new crystal, bezel and gasket. The rest of it is serviceable so far.

The crystal has a slot cut into it (not sure if that is from wear, or supposed to be there). It looks like a mushroom. (EDIT: looks like it is actually used to retain the bezel as I tried to replace the bezel without it and it just falls off).

I added some pics, and some text to better highlight what the words are on the pictures. Like I said, if anyone can help me locate parts I would appreciate it.
Dan

Thought it only fair that I should close out this post. Parts found as close to correct as possible. Customer happy, so I am happy

Dan

looks good, where did you source the crystal from?

Esslinger had them. I had to scour through the GS Crystal catalog but found one that fit.

great good to know I like Esslinger.