Perfecto Vintage Glass Watch Crystal 16-8/16 (~37.2mm) - NOS

Perfecto Vintage Glass Watch Crystal size 16-8/16 = ~37.2mm with a thickness of between 1.0 and 1.2mm.  This a Mi-Empire profile crystal which is really just a flatter dome concave crystal with a slight edge to match the inner curve of the bezel. 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.