{"product_id":"gruen-precision-chronograph-770r","title":"Gruen Precision Chronograph 1970's","description":"\u003cp\u003e\u003cem\u003eA unique chronograph from a forgotten brand.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReference 770R\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Gruen Precision 770R chronograph dates from the 1970s. Gruen is an American watchmaker founded in 1894 in Ohio. From its earliest days, Gruen earned a reputation for the precision and reliability of its watches. In the early 20th century, it was considered one of the leading American watchmakers.\u003cbr\u003eUnfortunately, it did not survive the quartz crisis and ceased operations in the late 1970s.\u003cbr\u003eThis model, which has become relatively rare, is powered by the Valjoux 7730 caliber, which traces its origins to the famous Venus 188 caliber (a brand acquired by Valjoux in 1966).\u003c\/p\u003e\n\u003cp\u003eWrist size in photo\/video: 17 cm\u003c\/p\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCase\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSteel\u003c\/li\u003e\n\u003cli\u003eDiameter 37 mm (excluding crown)\u003c\/li\u003e\n\u003cli\u003eFluted crown and round steel pushers, acrylic crystal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMovement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eValjoux 7733 caliber, manual winding\u003c\/li\u003e\n\u003cli\u003eBi-compax cam architecture: continuous seconds at 9 o'clock, 30-minute chronograph counter at 3 o'clock\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDial\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDial turned ivory by patina\u003c\/li\u003e\n\u003cli\u003eApplied baton indexes, complemented by large Arabic numerals at 12 and 6 o'clock\u003c\/li\u003e\n\u003cli\u003eFaceted baton hands, slender chronograph sweep second hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWatch serviced in July 2026\u003c\/strong\u003e\u003c\/p\u003e","brand":"Gruen","offers":[{"title":"Default Title","offer_id":53669306106203,"sku":null,"price":1942.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/7919\/9835\/files\/DSC02921.jpg?v=1785482683","url":"https:\/\/vintagewatchspirit.com\/en-br\/products\/gruen-precision-chronograph-770r","provider":"Vintage Watch Spirit ","version":"1.0","type":"link"}