Seiko Uhrglas 44-20 – Vintage Mineralglas – NOS Quarz screwed-on base (plaque missing)

screwed-on base (plaque missing)

the project failed as early as 1964

Material : High-quality Italian Cordovan leather

engraving “Crystal Seven – Para Water Star – Automatic”

Serial number: 0293

Seiko Uhrglas 44-20 – Vintage Mineralglas – NOS Quarz screwed-on base (plaque missing)Original Seiko watch crystal with specification 44 20 , from unused old stock (NOS). The packaging is from (Nakanishi Shten) , a traditional Japanese spare parts dealer from Shinagawa, Tokyo. The imprint(Seiko Futbu) refers to older Seiko standard glasses according to Japanese type standards. The handwritten notation 44 20 means: Outer diameter: 44 mm Glass thickness: 2 mm This is a very large mineral glass, such as was used in vintage pocket watches,