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25 g – Filling system: Cartridge or converter (European standard) – Spring: Stainless steel with iridium tip – Spring width: M (Medium) – Origin: Japan – entirely manufactured and assembled in Japan
Limited Edition
Das Modell wurde 2025 vollständig von einem japanischen Uhrmacher revidiert (komplette Demontage
the manual winding works perfectly
The rectangular day-date window at 3 o'clock is framed and slightly recessed – a typical detail of the Business A series
Seiko Chronos – Zifferblatt-Halteschraube Nr. 012211 (NOS, 1 Stück) Taucheruhr 25 g – Filling system:Original dial retaining screw for Seiko Chronos models of the late 1950s and early 1960s. Such small parts are essential for the correct, original assembly of the dial and are now extremely rare as unused original parts. Technical details Original Seiko replacement part () NOS unused, from a watchmaker's old stock Material: Steel Thread diameter approx. 0. 50 mm Head diameter approx. 0. 80 mm Total height including head approx. 2. 20 mm Suitable for