Mercury Flat Crystal Y1685 (GS Y450) for DIEL - 16.8 x 12.2 mm - New

Majestic Watch Crystal Company Mercury Processed Flat Acrylic Crystal Y1685 for DIEL bracelet wrist watch cases, measures 16.8 x 12.2 mm, new in envelope. Diel made cases that usually housed other Swiss makers movements, predominately those from the 1920's and 1930's. I have a batch of these Mercury crystals that are really quite nice and are comparable to GS crystals, which Majestic realized they were competing against, hence the GS P/N is included as well (Y450).  Pretty much all crystals require some light filing / sanding for proper fit. I have thousands upon thousands of wrist and pocket watch crystals as well as watch parts of all kinds, and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.