Vintage Beveled Glass Pocket Watch Crystal 18-5/16 (~41.3mm) - NOS

Vintage Beveled Glass Pocket Watch Crystal size 18-5/16 = ~41.3mm with a thickness of ~1.15mm. Beveled edge as was common for the time, these come from bundles of bulk stock crystals made in Japan and sold to back-fill glass crystal cabinets.  While still likely well over 100 years old, in my 40 years of experience with them I've not found the older crystals to be any more or less brittle than anything you could find today. That said, they are quite likely dirty and need serious cleaning. I likely have several of these so the one you get may differ slightly from the images.  I have a supply of crystals that numbers in the hundreds of thousands so I can usually supply just about any size Watch Crystal you need (glass or acrylic) so feel free to inquire. Images do an adequate job of representing the item.