18k white or yellow gold Wrist Chronometer no. -
Case: 18k white or yellow gold rectangle
Dial: 18k white gold with jump hour display, minute disk and simple seconds, dial signed Cartier, France
Movement: 10''' tonneau, probably 18 jewels, all adjustments and 2 Poincon de Geneva quality seals
1928 - Niton, Geneva
1928 - Cartier, Paris
1989 - book Cartier, A Century or Cartier Wristwatches’ by George Gordon
Cartier, A Century or Cartier Wristwatches’, by George Gordon (1989), chapter "Timeless Elegance" on page 448 with Reference Number 131 18k Gold rectangular, jump hour, min disk, sec.
Cartier bought at Niton at least 3 jump hour wristwatches, 2 tank shape and 1 tonneau shape.