VTF Vintage Glass Pocket Watch Crystal 18-6/16 (~41.5mm) - NOS

VTF Vintage Glass Pocket Watch Crystal size 18-6/16 = ~41.5mm with a thickness of ~1.3mm. This is a Mi-Concave profile crystal which is the most common found on vintage pocket watches.  While still likely well over 80 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 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.