Seiko Uhrglas 220W01AL – Tokelaito Mineralglas – für Seiko Chorus Week – NOS Taucheruhr Double-domed sapphire crystal

Double-domed sapphire crystal

Both the watch glass and the case back are made of domed sapphire crystal with AR coating for optimal clarity and durability

Die Presmatic war zugleich ein technisches Versuchsfeld für neue Automatiksysteme (u

Peacock – Symbolizing beauty

belieferten vor allem den japanischen Binnenmarkt und verschwanden oft bis Anfang der 1960er Jahre wieder

Seiko Uhrglas 220W01AL – Tokelaito Mineralglas – für Seiko Chorus Week – NOS Taucheruhr Double-domed sapphire crystalOriginal Seiko Tokelaito () watch crystal with reference 220W01AL , from unused old stock (NOS). Tokelaito is Seiko's historical name for a hardened mineral glass that was used in numerous models of the 1960s and 1970s. This glass was demonstrably used in the rare Seiko Chorus Week series an elegant vintage collection for which original parts are now almost impossible to find. The WP marking on the packaging stands for the waterproof version ("Water