{"product_id":"vintage-watch-seiko-5-actus-ss-6106-8440","title":"Vintage Watch | SEIKO 5 ACTUS SS 6106-8440","description":"\u003ch2 dir=\"auto\"\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003e\u003cstrong\u003eSeiko 5 Actus SS 6106-8440: Cushion Case, 25-Year Service Engraving (Fully Serviced)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eA Seiko 5 Actus SS 6106-8440 is a Japan-market automatic from about 1969–1970: cushion steel case, day-date, hacking seconds. This one keeps the brushed finish in excellent condition. The caseback is hand-engraved for 25 years of service at Sugie Seiki, a precision metal-parts maker.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWhat the Actus SS name means\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eActus sat above the ordinary Seiko 5. The “5” was Seiko’s own checklist: Diaflex mainspring, Diashock, automatic winding, day and date, water resistance. SS on the dial is Second Setting — pull the crown and the seconds hand stops, so the watch can be set to a time signal. Caliber 6106 is the automatic underneath: typically 23 jewels, 21,600 bph, Magic Lever winding, quick-set day and date by pushing the crown. The same 61-series idea later fed Seiko’s chronographs and the 61GS. On a 5 Actus it is a daily watch, not a dress flagship.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eThis Seiko 5 case\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eReference 8440 is the cushion \/ tonneau Actus, about 40 mm across, 19 mm lugs, thick enough to read as a 1970s sports-dress watch and still clear a cuff. Brush on the top surfaces, polished flanks. On this example the brush is still even and the edges are still there. Excellent, not a later polish pretending to be original.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eThe unique history of Seiko 5 actus engraving\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eJapanese companies of this era gave a watch at a long-service mark. This caseback is hand-engraved for 25 years at Sugie Seiki. The lettering is cut by hand, not a printed sticker and not a modern laser job. It ties the watch to one workshop and one career. That is the reason this 8440 is not a generic Actus.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eMaker:\u003c\/strong\u003e Seiko\u003cbr\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e 5 Actus SS 6106-8440\u003cbr\u003e\u003cstrong\u003eEra:\u003c\/strong\u003e 1970 Feb\u003cbr\u003e\u003cstrong\u003eCase:\u003c\/strong\u003e Stainless cushion, brushed finish, excellent\u003cbr\u003e\u003cstrong\u003eCase Diameter:\u003c\/strong\u003e approx. 40 mm\u003cbr\u003e\u003cstrong\u003eLug Width:\u003c\/strong\u003e 19 mm\u003cbr\u003e\u003cstrong\u003eCaseback:\u003c\/strong\u003e Hand-engraved, 25 years of service, Sugie Seiki\u003cbr\u003e\u003cstrong\u003eMovement:\u003c\/strong\u003e Automatic Caliber 6106, 21,600 bph, hacking, day-date\u003cbr\u003e\u003cstrong\u003eDial:\u003c\/strong\u003e Actus SS, day and date at 3\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eA vintage Seiko 5 Actus SS 6106-8440 with the brush still on the cushion, and a named 25-year engraving on the back, is the Actus you buy for the case and the story together.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIt comes with a Kyoto Series leather strap in any colour. Tell us which one.\u003c\/p\u003e","brand":"Samurai Vintage Co.","offers":[{"title":"Default Title","offer_id":51784346239222,"sku":null,"price":308.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7639\/5913\/files\/Seiko5_6106_8440_1.jpg?v=1791101744","url":"https:\/\/thesamuraivintage.com\/products\/vintage-watch-seiko-5-actus-ss-6106-8440","provider":"Samurai Vintage Co.","version":"1.0","type":"link"}