G-S Flexo CMT345-15 Watch Crystal for Gruen Coronado

This is a vintage G-S Flexo CMT345-15 cylinder crystal, specifically made for the Gruen Coronado watch. It's still in its original paper sleeve, which shows some age but has kept the crystal protected. The dimensions are 23.5 x 20.7. Perfect if you're restoring an old Gruen and need an exact fit. New old stock.