Seiko Tokelaito-Uhrglas RE1N77AN – 25 × 31 mm – eckig/gewölbt – Vintage Watch Glass – NOS Kompessoruhr the case achieves 900 HV

the case achieves 900 HV and develops an individual patina over time

The silver-white dial features the traditional Japanese pattern 「工字繋ぎ（こうじつなぎ / Kōji-tsunagi）」

Product specifications:

gefertigt in Japan und montiert von spezialisierten Uhrmachern in Nagano

Rarity & Use Birdie spare parts are now extremely rare

Seiko Tokelaito-Uhrglas RE1N77AN – 25 × 31 mm – eckig/gewölbt – Vintage Watch Glass – NOS Kompessoruhr the case achieves 900 HVOriginal Seiko Tokelaito () 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