Seiko Watch Crystal RE1N78GN00 – 19.8 × 23.6 mm – Rectangular/Flat – Vintage Watch Glass – NOS

Original Seiko watch glass from unused old stock (NOS) – genuine Seiko spare part from Hattori Seiko Co., Ltd. (Japan), the Seiko parent company.

The glass bears the Seiko reference RE1N78GN00. The prefix "RE" indicates a rectangular (angular) glass shape for Seiko; the reference is listed in Seiko glass catalogs. It is a flat, rectangular glass without a magnifying field.

The exact case/model assignment can be researched using the Seiko part number in the manufacturer's spare parts catalogs (e.g., Jules Borel); it is offered by reference and exact dimensions.

The packaging bears the original Hattori-Seiko "Watch Parts" marking (blue/white) from old stock. The glass itself is unused, clear and without scratches; signs of age are only found on the packaging.

Dimensions:

• Shape: angular/rectangular, flat (portrait orientation installation)
• Width (3–9 o'clock): 19.8 mm
• Height (12–6 o'clock): 23.6 mm
• Magnifying field: no
• Reference: RE1N78GN00 (Hattori Seiko)