Seiko Spare Part – Winding Stem for Seiko "Purple" (1 Piece) – NOS

Original and very rare Seiko spare part – 巻真（まきしん）/ Winding Stem for the Seiko "Purple" (パープル), from new old stock (NOS). Offered is a single piece, taken from an original "FOR SEIKO" dealer bag (printed "パープル用" = "for Purple").

The winding stem is a central component of the keyless works and is necessary for winding and setting the hands: The square engages with the clutch/winding gear train, and the external thread receives the crown.

The Seiko "Purple" is a rather rare, compact Seiko model from the 1960s. Original spare parts for these early Seikos are difficult to find today, which makes this part particularly relevant for watchmakers and collectors.

The part is unused and in very good original condition; due to storage, there may be minor, purely cosmetic marks that do not affect functionality.

Note: A precise caliber/measurement is not noted on the bag; please compare measurements and fit with the required winding stem before installation.

Manufacturer: Seiko (K. Hattori & Co., Japan).

Warranty (used) This is an original part (NOS) stored for decades. The limitation period for defect claims (statutory warranty) is 12 months from delivery.

Note Before installation, please compare measurements and fit with the required winding stem; assembly should be carried out professionally.