Bi-color gold Wrist Chronometer no. 5497
Case: s/n; 10194, 18k white gold, with 18k yellow gold 'keyhole' dial cover
Dial: silver dial, with jump hour display, seconds disk and simple seconds, dial signed Cartier
Movement: 10''' tonneau, 8 adj, 18 jewels, 2 x Poincon de Geneva quality seals, obtained at November 23, 1928
1928 - Niton, Geneva
1928 - Cartier, Paris
1994 - Antiquorum
2020 - Instagram by Italian collector Mr. Auro Montanari aka John Goldberger
White Cartier Bianco' by Osvaldo Patrizzi's, Antiquorum, page 150-151/ photo’s by Philip Poniz; 18k white gold, yellow gold 'key hole' dial, jump hour, min disk and sec.
The same Cartier jumping hour is shown at Antiquorum, but without the gold 'keyhole' dial cover.
Antiquorum, Auction No. 127, April 10, 1994, Lot No. 171, Geneva, Hotel des Bergues 22-25,000 CHF sold CHF 29,900 "Cartier Paris, made by Niton Geneva, 1930' Very fine and rare "tortue", jumping-hour, 18ct white gold gentleman's wristwatch. C. massive, polished, satined, dedicated back. D. satined silver with painted Arabic numerals for the minutes and the seconds, aperture for the jumpinghours. "Flèche" blued steel hands. M. 9"' tonneau, rhodiumed, "fausses côtes" decoration, 18 jewels, lever escapement, cut bimetallic balance with all ajustments, Breguet balance-spring. Dial, case and movement signed. In very good condition. Dim. 25 x 35 mm. C. massive, polished, satined, dedicated back. D. satined silver with painted Arabic numerals for the minutes and the seconds, aperture for the jumpinghours. "Flèche" blued steel hands. "
The Cartier register shows that Cartier No 28343 was completed in 1932 and had bought the movement from Niton.
Cartier bought at Niton at least 3 jump hour wristwatches, 2 tank shape and 1 tonneau shape as mentioned above.