Seiko Tokelaito Crystal RE1N77AN – 25 × 31 mm – Rectangular/Domed – Vintage Watch Glass – NOS

Original Seiko Tokelaito (トキライト) crystal from new old stock (NOS).

Tokelaito is Seiko's designation for the original watch crystals used in many models from the 1960s to the 1980s. The crystal bears the Seiko reference RE1N77AN (quality mark "C", JAPAN). The prefix "RE" at Seiko indicates a rectangular (angular) crystal shape.

This is an angular (cushion-shaped), curved crystal without a magnifyer. The packaging does not specify the material; curved crystals of this design are usually plastic/acrylic glass.

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

The packaging shows the classic red and white Seiko Tokelaito labeling from old stock. The crystal itself is unused, clear, and without scratches; signs of age are only on the packaging.

Dimensions:

• Shape: angular/rectangular (cushion-shaped), curved (portrait orientation)
• Width (3–9 o'clock): 25 mm
• Height (12–6 o'clock): 31 mm
• Overall height (curve): 2.7 mm
• Magnifyer: no
• Reference: RE1N77AN