{"product_id":"aufzugswelle-winding-stem-passend-fur-seiko-grosse-10-vintage-herrenuhr-handaufzug-1-stuck-nos","title":"Winding Stem suitable for Seiko – Size 10½''' – Vintage Men's Hand-Wound Watch – (1 piece) – NOS","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eWinding stem (巻真) from new old stock (NOS), manufactured to fit Seiko movements of size 10½ ligne. A single piece is offered, taken from an original supplier package with the imprint \"FOR SEIKO WINDING STEMS\" and the size stamp 10½.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eRegarding origin: This is a spare part from a Japanese supplier, intended for Seiko movements – not an original part distributed by Seiko itself. Such supplier stems were common practice in Japanese watchmaker workshops in the post-war decades and were matched in quality and fit to the production movements.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe size indication in lignes (10½''' corresponds to approx. 23.7 mm movement diameter) instead of caliber numbers refers to the period before the introduction of Seiko's numerical caliber designation, essentially the 1950s. 10½''' is the classic men's watch size of this era; accordingly, the stem is suitable for hand-wound movements from the early phase of industrial Seiko wristwatch production.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe winding stem transmits power from the crown to the winding wheel and, via the setting lever detent, controls the change between winding and hand-setting positions. It is one of the components most directly stressed in everyday use: a torn thread – a typical consequence of a forcefully pulled winding crown – or a worn square renders an otherwise intact movement useless. For movements of this age, replacements are practically only available from old stock or donor movements.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eSize indication on package: 10½''' (lignes) - 「新10½」 – \"new\/new type, size 10½ lignes\"\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe part is unused. Due to storage, slight, purely cosmetic traces may be present, which do not affect functionality.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eNote on attribution: The size information comes from the original packaging; a caliber-specific attribution is not documented. Only the dimensions mentioned above are decisive. Please compare these with the required winding stem before purchase.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eOrigin: Japanese supplier part, manufactured for Seiko watch movements. The brand SEIKO is used solely as an indication of purpose; the part does not originate from the Seiko Watch Corporation.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eWarranty (used)\u003c\/strong\u003e\u003cbr\u003eThis is a spare part from old stock (NOS) stored for decades. The limitation period for warranty claims (statutory warranty) is 12 months from delivery.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eNote\u003c\/strong\u003e\u003cbr\u003eBefore installation, please compare the stem dimensions and fit with the required winding stem; assembly should be carried out professionally.\u003c\/p\u003e","brand":"Vintage \u0026 JDM (Japan Domestic Market)","offers":[{"title":"Default Title","offer_id":54271437078866,"sku":null,"price":9.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0911\/3908\/0530\/files\/629BA66B-FCF4-4B24-9540-E15EDFCF128D.jpg?v=1786812788","url":"https:\/\/japanese-microbrands.com\/en\/products\/aufzugswelle-winding-stem-passend-fur-seiko-grosse-10-vintage-herrenuhr-handaufzug-1-stuck-nos","provider":"Japanese Microbrands - Mario Lenke","version":"1.0","type":"link"}