circa 1928, the cream coloured dial marked CHRONOMETRE TRESOR, 42mm diameter, with gold coloured Arabic numerals, blued spade and whip hands, subsidiary seconds register at 6 o'clock and dot minute track, unsigned and unnumbered 16 jewel mechanical crown wind movement with pumpkin shaped winder, case, 51mm diameter, both covers hinged at 9 o'clock and elaborately engine turned all over, the front with a vacant rectangular shaped cartouche, interiors numbered 21258 with Swiss mark for 18ct gold, Le Locle, additionally stamped 18K 0.750, the cuvette similarly marked, and additionally engraved REMONTOIR ANCRE LIGNE DRIOTE QUALITE PRECISION 16 RUBIS 71g gross