G-S Flexo X473 Watch Crystal for Gruen

This is a vintage G-S Flexo watch crystal, specifically model X473 designed for Gruen watches. It's still in its original paper envelope, which measures 16.1 x 08.1. These are great for restoration projects if you're trying to keep a vintage piece authentic. The packaging shows some age but the crystal inside is protected. Perfect for a watchmaker or a hobbyist collector.