18k white gold Chronometer no. 5355

Case: s/n; 10172, Dial: unsigned, cream (silvered) guilloche dial with hour aperture and two minutes and seconds subdials Movement: s/n; 5355 or 5255, caliber 17 ligne, 18 jewels, all adjustments, 2 x Poincon de Geneve quality seals, obtained in the year 1928 Provenance: 1928 - Niton, Geneve 2023 - Dawsons Auctioneers, United Kingdom Lot 487; A fine Montres Niton Genève open-face Jump hour pocket watch, featuring a stunning Swiss-made thin keyless wound movement in an 18ct white gold case measuring 44mm with a cream guilloche dial with hour aperture and two minutes and seconds subdials. Model: 5355 Case No: 10172 Circa 1930's Lot 487; 23RD NOV, 2023 9:30 The November Jewellery, Watches & Silver Auction Niton supplied movements to the likes Of Patek Philippe, Van Cleef & Arpels, A. Lange & Sohne, Breguet, Cartier and Vacheron Constantin to name a few through the 20's and 30's. Only 24 Jump hour movements are known Notice; This jump hour pocket watch is the second one known to the public. Interesting is that there are two timepieces with the same serial number (5355). One of the two is in all probability serial number 5255 which obtained the Poincon de Geneve quality seal on June 23, 1928 and was part of a batch of 6 (5255-5260). https://www.dawsonsauctions.co.uk/auction/lot/lot-487---a-fine-montres-niton-genve-open-face-jump/?lot=76073&so=0&st=&sto=0&au=184&ef=&et=&ic=False&sd=1&pp=48&pn=8&g=1