Seiko Ersatzteil 383121 – Stellhebel (1 Stück) – NOS Taucheruhr NOS spare part from the

NOS spare part from the early Seikosha era (predecessor of SEIKO)

Condition: decent vintage condition

Diese Generation markierte das Ende der rein mechanischen Grand-Seiko-Ära vor dem Beginn der Quarzrevolution 1969/70

the movement is clean and fully functional

Seiko Ersatzteil 383121 – Stellhebel (1 Stück) – NOS Taucheruhr NOS spare part from theOriginal Seiko spare part 383121 from unused old stock (NOS). This is the setting lever , an essential component of the key mechanism, which controls the switching between winding and hand setting. This part is brand new, unused, and in original, flawless condition. Ideal for overhauls, repairs, or complete restorations of classic Seiko movements.