Seiko Original-Ersatzteil – Unruhwelle (Balance Staff) – Seikosha (K.K.S.) Typ 新8 [NEU 8] – NOS – (1 Stück) Kompessoruhr referencing the first locomotive used

referencing the first locomotive used in Japan

a power reserve indicator at 6 o'clock with a red hand

einzelne im Foto sichtbare Pünktchen/feine Spuren sind überwiegend Staub/Reflexe auf der satinierten Goldoberfläche (bitte Makrofotos prüfen)

With a case height of just approx

Besonderes Detail: Das Type II-Blitzsymbol oberhalb der 6-Uhr-Position – ein Hinweis auf Seikos frühe Hochpräzisionsquarzwerke

Seiko Original-Ersatzteil – Unruhwelle (Balance Staff) – Seikosha (K.K.S.) Typ 新8 [NEU 8] – NOS – (1 Stück) Kompessoruhr referencing the first locomotive usedOriginal Seiko Seikosha replacement part from new old stock (NOS) genuine balance staff, the central axis of the balance wheel. The balance staff carries the balance wheel and hairspring, and its two fine pivots run in the movement's jewels. It is the most frequently broken component in a mechanical watch movement the pivots typically break due to shocks or falls. This is precisely why a genuine NOS balance staff is a sought after part for restorers;