G-S Flexo Y910 Watch Crystal for Gruen

This is a vintage G-S Flexo watch crystal, specifically model Y910 designed for Gruen watches. It's still in its original paper envelope, which lists the dimensions as 26.8 by 22.2. These are great for restoring old timepieces to their former glory. New old stock. It's a specific fit, so make sure those measurements match what you need.