{"product_id":"citizen-jet-auto-dater-21-jewels-ringrotor-automatik-firmengravur-nippon-express-1966-frisch-revidiert","title":"Citizen Jet Auto Dater 21 Jewels - Ring Rotor Automatic - Company Engraving Nippon Express 1966 - freshly serviced","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThis watch tells two stories. The first is technical: in the early 1960s, Citizen built an automatic movement that was unique in Japan. The second is personal, and it's literally written on the caseback – in Japanese, engraved, with a date and company name.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eThe Jet movement: Citizen's own path\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eWhile Seiko consistently focused on central oscillating weights, Citizen took a different approach in October 1961 and introduced the so-called Jet movement. Its special feature is a peripheral ring rotor: instead of an oscillating weight above the center of the movement, a narrow ring runs along a ball bearing track at the edge of the movement and engages with the winding gear via internal teeth. The FHF Fontomatic from 1959 served as a model.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe effect is twofold. Technically, the movement is flatter because no space is needed for an oscillating weight above the gear train level. Haptically, the winding feeling is incomparable to a conventional automatic – the ring runs with a peculiar, even smoothness. The second generation of movements, the 41xx series from 1964, operates at 18,000 vibrations per hour and offers quick date adjustment by repeatedly pulling the crown – far from standard in 1964.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eCitizen returned to the conventional central oscillating weight after a few years, as it was cheaper to manufacture. The Jet movement is thus a closed technical chapter without modern successors – and precisely for this reason, it is interesting for collectors.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eTwo more Citizen terms are on the dial. \"Parashock\" refers to Citizen's shock protection for the balance staff, \"Phynox\" to the alloy of the mainspring – a cobalt-based, rust-free, and fatigue-resistant spring that Citizen introduced as an answer to the susceptibility of older carbon steel springs to breakage and featured on the dial as a quality mark from the late 1950s.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eThe engraving: Nippon Express, Shōwa 41\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe caseback features a clear, deeply cut engraving:\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003e永年勤続表彰 — 昭和41年 — 日本通運株式会社\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eTranslated: \"Award for Long Service — Shōwa 41 (1966) — Nippon Express Co., Ltd.\"\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eNippon Express remains one of Japan's largest logistics companies. The watch was presented to an employee in 1966 for long-standing loyalty – a deeply rooted practice in Japan, where the watch was a token of recognition, not a piece of jewelry. This example is thus dated precisely to the year and documented in its origin, which is an absolute exception in this price range.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe engraving does not name an individual, but rather the occasion, year, and company. For those who buy vintage watches for their history, here's one you can actually read.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eDesign and Character\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe dial is a bright sunburst dial, finely brushed and strictly structured: applied baton indexes, slender hands, central seconds hand, and a date window at 3 o'clock in a framed, slightly cushion-shaped design. The signature features the stylized Jet emblem above the \"Citizen Jet \/ Auto Dater\" lettering; below it, in fine script, \"21 Jewels \/ Parashock phynox\".\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe polished stainless steel case is clean, with a narrow bezel and short, strong lugs. With a diameter of 37.1 mm, 45.1 mm lug-to-lug, and a height of 12.3 mm, the watch has a balanced, everyday-suitable stature; 48 grams make it one of the lighter automatic watches of its time. A utilitarian watch from the Japanese economic miracle, built for people who wore it every day – and it still wears exactly the same today.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eCondition\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe watch comes with a new black leather strap with a crocodile embossed pattern. The watch has been freshly serviced by a Japanese watchmaker.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBrand: Citizen\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eModel: Jet Auto Dater\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMovement: Automatic with peripheral ring rotor, manual winding possible\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eJewels: 21 Jewels\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eVibrations per hour: 18,000 A\/h\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eShock protection: Parashock\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMainspring: Phynox\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFunctions: Hour, minute, central second, date with quick adjustment\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCase material: Stainless steel\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDiameter without crown: 37.1 mm\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLug-to-Lug: 45.1 mm\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHeight: 12.3 mm\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLug width: 19 mm\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWeight including strap: 48 g\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDating: 1966, evidenced by caseback engraving\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSpecial feature: Company engraving Nippon Express, award for long service\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStrap: New black leather strap, crocodile embossed\u003c\/li\u003e\n\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOrigin: Japan\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eFor whom?\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eFor collectors of technical oddities seeking an automatic movement that no other Japanese manufacturer built this way. For anyone who values a documented origin dated precisely to the year. And for buyers who want an understated everyday watch with a date that works just as well in the office as it does on weekends.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eWarranty (used)\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThis is a used item. The limitation period for claims for defects (statutory warranty) is 12 months from delivery.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eNote\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eAs this is a used watch, water resistance cannot be guaranteed. To protect the movement, the watch should not come into contact with water or moisture.\u003c\/p\u003e","brand":"Vintage \u0026 JDM (Japan Domestic Market)","offers":[{"title":"Default Title","offer_id":54150995968338,"sku":"A333","price":579.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0911\/3908\/0530\/files\/3FD2ED03-4C0A-414E-83CC-8C008FC05993.jpg?v=1785721042","url":"https:\/\/japanese-microbrands.com\/en\/products\/citizen-jet-auto-dater-21-jewels-ringrotor-automatik-firmengravur-nippon-express-1966-frisch-revidiert","provider":"Japanese Microbrands - Mario Lenke","version":"1.0","type":"link"}