{"product_id":"seiko-ersatzteil-315006-1-stuck-unruhwelle-天真-balance-staff-fur-seiko-88-stoppuhr-kal-8800a-f-nos","title":"Seiko Spare Part 315006 (1 piece) – Balance Staff (天真 \/ Balance Staff) for Seiko 88 Stopwatch (Cal. 8800A–F) – NOS","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOriginal \u003cstrong\u003eSeiko Balance Staff (天真 \/ Balance Staff)\u003c\/strong\u003e with part number \u003cstrong\u003e315006\u003c\/strong\u003e from New Old Stock (NOS) for \u003cstrong\u003eSeiko \"88\" stopwatches\u003c\/strong\u003e (caliber family \u003cstrong\u003e8800\u003c\/strong\u003e – versions \u003cstrong\u003e8800A, 8800B, 8800C, 8800D, 8800F\u003c\/strong\u003e, among others). Offered is \u003cstrong\u003ea single piece\u003c\/strong\u003e, taken from an original Seiko parts package (\"5 PCS\").\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe balance staff is one of the central and most heavily stressed components of the movement: it carries the balance wheel with hairspring, and its fine pivots run in the (cap) jewels. A broken or worn balance staff is a common reason for servicing – original NOS staffs are therefore particularly sought after.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eRegarding application: The Seiko 88 series are mechanical stopwatches (calibers 88 \/ 8800, approx. 1960s–1980s) which, depending on the version, ran at 18,000 or 36,000 vibrations\/hour and offered, among other things, 1\/5- or 1\/10-second display, 30-minute register, and sometimes flyback. Original, unused spare parts for these stopwatches are hard to find today – relevant for watchmakers and collectors who are restoring a Seiko stopwatch.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe part is unused; storage may have caused minor, purely cosmetic traces that do not affect functionality.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eNote on assignment: Before installation, please compare the shaft dimensions (pivot diameter, overall height, plateau\/roller seat) with the required balance staff or the specific 8800 version.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eManufacturer: Seiko (K. Hattori \u0026amp; Co., Japan).\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-pre-wrap leading-[1.7]\"\u003eWarranty (used) This is an original part (NOS) stored for decades. The statute of limitations for claims for defects (statutory warranty) is 12 months from delivery.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-pre-wrap leading-[1.7]\"\u003eNote Before installation, please compare the shaft dimensions and fit with the required balance staff; installation should be done professionally.\u003c\/p\u003e","brand":"Vintage \u0026 JDM (Japan Domestic Market)","offers":[{"title":"Default Title","offer_id":53659106148690,"sku":null,"price":18.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0911\/3908\/0530\/files\/56610CDE-BD2F-4519-9BF5-7FE579DA0F54.jpg?v=1780686422","url":"https:\/\/japanese-microbrands.com\/en\/products\/seiko-ersatzteil-315006-1-stuck-unruhwelle-%e5%a4%a9%e7%9c%9f-balance-staff-fur-seiko-88-stoppuhr-kal-8800a-f-nos","provider":"Japanese Microbrands - Mario Lenke","version":"1.0","type":"link"}