{"product_id":"seiko-ersatzkrone-crown-mit-dichtung-fur-seiko-champion-o-4-5-mm-hohe-2-4-mm-1-stuck-nos","title":"Seiko Replacement Crown with Gasket for Seiko Champion – Ø 4.5 mm, Height 2.4 mm (1 Piece) – NOS","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOriginal \u003cstrong\u003eSeiko replacement crown\u003c\/strong\u003e from new old stock (NOS) for the \u003cstrong\u003eSeiko Champion\u003c\/strong\u003e. \u003cstrong\u003eOne single piece (single crown)\u003c\/strong\u003e is offered.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe crown has an \u003cstrong\u003einternal gasket (seal ring\/O-ring)\u003c\/strong\u003e, making it a \u003cstrong\u003ewater-resistant crown (sealed crown)\u003c\/strong\u003e. This is fitting for the Champion: its crowns were often embossed with \u003cstrong\u003e\"SW\" (Seiko Waterproof)\u003c\/strong\u003e at the time, and from approx. 1963, the Champion Calendar offered water protection. The finely knurled edge ensures a secure grip when winding and setting. Silver\/steel-colored (see product photo), matching the chromed or stainless steel cases of the Champion.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eModel Background: The \u003cstrong\u003eSeiko Champion\u003c\/strong\u003e was Seiko's entry-level line in the early 1960s (manual winding, initially Seikosha 54, from 1963 Seikosha 850\/860, from 1964 caliber 7622) and was introduced as the successor to the \u003cstrong\u003eSeiko \"Cronos\"\u003c\/strong\u003e – from which Daini also derived the high-quality \u003cstrong\u003eKing Seiko\u003c\/strong\u003e in 1961. As the Champion appeared in several case generations, \u003cstrong\u003edifferent crown sizes\u003c\/strong\u003e were used; please compare the dimensions.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDimensions: \u003cstrong\u003eDiameter approx. 4.5 mm, height approx. 2.4 mm\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe part is unused; due to storage, minor, purely cosmetic traces are possible, which do not impair the function.\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 dimensions and thread\/tap size (or push-on fit and axle diameter) with the required crown or winding stem.\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 limitation period for defect claims (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 dimensions and fit (tube\/thread or push-on fit and axle diameter); assembly should be carried out professionally by a watchmaker. Despite the existing gasket, no water resistance is guaranteed due to age - the sealing ring should be professionally checked or replaced before use near water.\u003c\/p\u003e","brand":"Vintage \u0026 JDM (Japan Domestic Market)","offers":[{"title":"Default Title","offer_id":53676452610386,"sku":null,"price":19.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0911\/3908\/0530\/files\/IMG-8801.heic?v=1780860137","url":"https:\/\/japanese-microbrands.com\/en\/products\/seiko-ersatzkrone-crown-mit-dichtung-fur-seiko-champion-o-4-5-mm-hohe-2-4-mm-1-stuck-nos","provider":"Japanese Microbrands - Mario Lenke","version":"1.0","type":"link"}