Approx. 55mm diameter, ca. 102g, housing of special quality, Breguet type, recessed, screwed middle part, 18K red gold, very rare, special caliber with cylinder inhibition, quarter-hour repetition and figure machine, enamel dial, Breuet steel pointer, walkable, impact unit in need of adjustment. The quality of the case and the work differ significantly from the "usual" Jacquemarts of this time and point to one of the great watchmakers of this period, possibly Le Roy or Lepine.