1972 LONGINES ULTRA CHRON HI BEAT CHRONOMETER CERTIFIED AUTO À MARTIGUES

1972 Longines Ultra Chron Hi Beat Chronometer Certified Automatic Cushion Watch History In 1967, Longines launches the Ultra-Chron, with a self-winding 11″ line caliber aiming to offer an alternative to the electronics and quartz used by the competition. The regulating organ of the L430 movement is a guarantee of accuracy, with the characteristics of a competition piece as it vibrates at a frequency of 36,000 vibrations per hour. The Longines Ultra-Chron Cal.431, Hi-Beat movement lives in that most rarified atmosphere of some of the highest performing watches ever made. For Longines to release this watch and movement in 1967, bill it as the world’s most accurate watch, and guarantee it to be accurate to within a minute a month, was an extraordinary claim for a series produced mechanical wristwatch It resulted in offering one of the best quality movement Longines has ever produced.  The watch  The condition of the watch is excellent, the case, the dial, hands and indexes, the movement are all original and in mint condition. The Chronometer Certified movement is very accurate. The dial is flawless, there are no scratches, dirt or any sign of rust, which is very rare.  The watch comes with a high quality “Worn and wound” USA Made Shark Blue Leather strap which gives a solid and confortable wearing experience. (Costs 95US$). There are No box and papers, thank you.  Characteristics  - Diameter without the crown 35mm, lug to lug 38mm, 11mm thick, and a very nice presence on the wrist.  - High Quality In house Caliber Longines 431, date and central second, Chronometer certified and very Accurate. It was originally adjusted on 4 positions and temperature, and beautifully decorated, certainly one of the most advanced 3 hands movement of its time.  - Flawless original Silver Dial (Polished) - Unique Cushion shape case with Brushed and Polished sides with few signs of wear, Screw down case back - Stamped Crown “Longines” + Eagle - Domed Acrylic Crystal in great condition - Worn And Wound USA Made leather strap, in very good condition and adjustable for all wrist size.  - Instant Change Date at 4.30, that clicks right at Midnight. Delivery Worldwide delivery in a secure package with insurance.  Please note that deliveries in the EU are free of Custom duties. If you are outside the European Union, please make sure of the custom duties that apply to you before purchase. No return accepted, If you have any questions before purchase, feel free to ask.  Thank you