{"product_id":"collectible-1970s-nivada-grenchen-tank-ref-67018-cal-as1906-21j-automatic-oh","title":"Collectible! 1970s Nivada Grenchen Tank Ref 67018 Cal AS1906 21J Automatic (OH)","description":"\u003cp\u003e\u003cbr\u003eMake: Nivada Switzerland\u003cbr\u003eType: Automatic\u003cbr\u003eModel: Grenchen Series 67018\u003cbr\u003eYear of Production: Circa 1970s\u003cbr\u003eMovement: AS 1906\u003cbr\u003eBPH: 21,600\u003cbr\u003eNumber of Jewels: 21\u003cbr\u003eHand and Dial: 3D Baton Indices and Baton Hands\u003cbr\u003eWidth: 33mm\u003cbr\u003eLug to Lug Height: 39.3mm\u003cbr\u003eThickness: 10.9mm\u003cbr\u003eLug Width: 20mm\u003cbr\u003eBracelet \/ Strap: Brand New Hi-Quality Genuine Calf Fine Grain Leather with Black Buckle\u003cbr\u003e Pouch \/ Box: Brand-New EVA Type Zipper Pouch\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eFounded in Grenchen, Switzerland, in 1926 (sometimes cited as 1879) by Jacob Schneider. Nivada quickly gained a reputation for reliable and affordable Swiss watches.\u003c\/p\u003e\n\u003cp\u003eDuring the 1960s–1970s, Japan was one of the largest importers of Swiss watches, but the country also had a booming domestic industry (Seiko, Citizen, Orient).\u003c\/p\u003e\n\u003cp\u003eFor Swiss brands like Nivada (especially after the quartz crisis), Japan was a critical export market but also a very difficult one: Japanese buyers wanted value-driven watches, and local distributors often demanded exclusive designs to stand out in an oversaturated market.\u003c\/p\u003e\n\u003cp\u003eHere we have a Nivada Grenchen Ref 67018, a watch extremely popular in Japan.\u003c\/p\u003e\n\u003cp\u003eThis beautifully tank shaped silver case underwent a good clean-up while maintaining its super sexy curves. Most imperfections were removed without compromising the case shape. The original crystal was polished and is in excellent condition.\u003c\/p\u003e\n\u003cp\u003eThe signed crown is original and is located at the 3H position and is nicely tucked away yet easily accessible.\u003c\/p\u003e\n\u003cp\u003eThe movement was carefully stripped, meticulously cleaned, oiled, re-assembled and calibrated on 21 June 2026; hence it underwent an overhaul and not a general servicing. It should be able to operate unhindered until the next servicing thereby providing the owner peace of mind.\u003c\/p\u003e\n\u003cp\u003eEquipped with the AS1906 movement, it has 21 Jewels and operate at 21,600 BPH. The time-grapher shows stunning readings of -1 second and amplitude of 234 with a very good straight centered line! Such readings are truly exceptional even by brand new modern automatic watch standards whereby the accepted tolerance is -20 to +40 seconds a day! This is a testament to the quality, the meticulous care provided over the years, and of course the painstaking calibration conducted.\u003c\/p\u003e\n\u003cp\u003eThe case width and height are approximately 33mm (w\/o crown) and 39.3mm respectively. The lug width is 20mm and the strap can accommodate wrists up to 21cm; hence, this watch is suitable for men and the modern women.\u003c\/p\u003e\n\u003cp\u003eThe watch is accompanied by a brand-new hi-quality genuine fine grain calf leather brown strap with black buckle as part of the deal.\u003c\/p\u003e\n\u003cp\u003eTo the best of our knowledge and expertise when overhauling the timepiece, the watch is 100% original Nivada components from this particular watch. No parts were replaced with aftermarket parts or modified.\u003c\/p\u003e\n\u003cp\u003eEven though the seals and gaskets are in place, this timepiece has not been water-resistant tested due to its age.\u003c\/p\u003e\n\u003cp\u003eThe pictures provided shows the watch in stunning condition and well maintained. It has also been demagnetised to improve parts reliability, minimise wear + tear, and improve accuracy. The only drawback is the lack of documentation and original box. A nice purposeful carrying case or box will be provided instead.\u003c\/p\u003e\n\u003cp\u003eBear in mind that this watch has seen many of the previous owners’ ups and downs in life and should be cherished and well taken care of for the next generation to savour such engineering beauty.\u003c\/p\u003e\n\u003cp\u003eYes, there are many other same models in the market, but almost all are not in the same quality condition and is well maintained as what you see here. Hence, it is a no-brainer that this one-of-a-kind watch will make an extremely beautiful birthday present for that special someone!\u003c\/p\u003e\n\u003cp\u003eThis is a highly sort-after Collectible Nivada Grenchen Tank automatic in stunning condition; so, be unique and wear a rare 1970s Nivada Vintage Watch that is almost impossible to source in such fine condition or purchase it for that special someone.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Altimate Group","offers":[{"title":"Default Title","offer_id":43465592340569,"sku":null,"price":625.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0279\/7590\/9465\/files\/IMG20260623135509.jpg?v=1782255837","url":"https:\/\/shop.altimate.sg\/products\/collectible-1970s-nivada-grenchen-tank-ref-67018-cal-as1906-21j-automatic-oh","provider":"Altimate Group","version":"1.0","type":"link"}