G-S Flexo T 553 Watch Crystal for Gruen

This is a vintage G-S Flexo watch crystal, specifically designed for a Gruen watch. It's still in its original paper envelope, which lists the dimensions as 19.8 by 16.6 millimeters. These crystals are great for anyone restoring a classic timepiece to its former glory. It's new old stock, so it's never been used and is ready to be fitted.