Borse
It may well be glass, but I can't see it well enough to say for sure. That was my question and not trying to bring your expertise into question at all.
A close-up like the ones above would tell. Nice grips! What are the makers on yours?
Everybody should have at least one......
You have your share......
I own a true amber grip on an Eickhorn that I bought a long time ago that has to be seen to believed. Originally out of Chip Gambino's Collection. One of those that I couldn't replace. No way, shape, form or fashion.