{"product_id":"49-years-old-longines-ultronic-tunig-fork-cal-6312-vintage-1976","title":"49 years old — Longines — Ultronic Tunig-fork  — Cal 6312 — Vintage 1976","description":"\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/youtube.com\/shorts\/nTPBgDv2eF0\" title=\"49 years old — Longines — Ultronic Tunig-fork  — Cal 6312 — Vintage 1976\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0520\/6641\/8838\/files\/Kopia_Kopia_Projekt_bez_nazwy_32eff723-d813-4344-b085-906bc7f13c5a_480x480.png?v=1758202377\" alt=\"\" style=\"float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e49 years old — Longines — Ultronic Tunig-fork  — Cal 6312 — Vintage 1976\u003cbr\u003eSmooth humming sweep, sharp 1970s geometry, mineral crystal for daily wear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollector Notes \u0026amp;  Dating\u003c\/strong\u003e\u003cbr\u003eLongines Ultronic in stainless steel with the high-grade Longines cal. 6312 (ESA 9162) tuning-fork movement. The 37 mm angular tonneau case wears slim and modern; silver sunburst dial with applied baton markers, baton hands and framed date at 3 with quickset. Signed crown present. Crystal is mineral glass. Fitted on an aftermarket steel bracelet.\u003c\/p\u003e\n\u003cp\u003eCal. 6312 is a 12-jewel, ~300 Hz tuning-fork caliber from the ESA 9162\/9184 family, designed under Max Hetzel (of Bulova Accutron 214 fame) and often dubbed the “Rolls-Royce” of tuning-fork movements. Movement no. 52956640 is recorded and dates to 1976. A clean, wearable slice of early electronic Longines with that unmistakable humming sweep.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003cbr\u003eMovement: Longines 6312 (ESA 9162) tuning-fork, 12 jewels, ~300 Hz, quickset date.\u003cbr\u003eDial: Silver sunburst, applied batons, baton hands, framed date at 3.\u003cbr\u003eCrystal: Mineral glass.\u003cbr\u003eCase: Stainless steel, angular tonneau; snap back; light honest wear.\u003cbr\u003eSize: 37 mm without crown.\u003cbr\u003eCrown: Signed Longines; push\/pull.\u003cbr\u003eStrap\/Bracelet: Aftermarket stainless-steel bracelet.\u003cbr\u003eWater-Tightness: Splash resistant; not pressure-tested.\u003cbr\u003eBox \/ Packaging: Secure travel watch case.\u003c\/p\u003e\n\u003cp\u003eA wearable early-electronic Longines with premium tuning-fork tech and timeless 1970s styling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e📦 What’s Included\u003c\/strong\u003e\u003cbr\u003eBox\/Case: Travel watch case.\u003cbr\u003eDocuments: Invoice \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e🚚 Shipping, Returns\u003c\/strong\u003e\u003cbr\u003eInsured worldwide shipping with tracking; 14-day inspection return in unused condition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e️ Call-to-Action\u003c\/strong\u003e\u003cbr\u003eInterested? Click “Negotiate Your Price” or message us for details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Longines","offers":[{"title":"Default Title","offer_id":51348892811606,"sku":"1702-08","price":0.0,"currency_code":"SEK","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/6641\/8838\/files\/PXL_20250918_130814024_303ce6cf-2b0f-4c93-8c13-605a77671960.jpg?v=1758206253","url":"https:\/\/e-v-w.com\/sv-se\/products\/49-years-old-longines-ultronic-tunig-fork-cal-6312-vintage-1976","provider":"Exclusive Vintage Watches – Swiss \u0026 Omega Vintage Watches","version":"1.0","type":"link"}