G-S Flexo CX322-4 Cylinder Watch Crystal for Gruen 275/671

This is a vintage G-S Flexo cylinder watch crystal, specifically model CX322-4. It's designed to fit Gruen 275/671 watch cases and measures 12.8 by 10.3 mm. It's still in its original paper envelope, which has some age-related toning but has kept the crystal protected. Perfect if you're doing a restoration on an old Gruen and need an exact period-correct replacement. New old stock.