Yellow gold 750. Smooth case no. 198713, the dust cover engraved: "Repetition a Quarts, Chronograph Haute Precision, Qualite Superieure, Systeme Brevete". Fine enamel dial with tachymeter scale, signed: TH. Picard Fils, La Chaux-de-Fonds. Chronograph movement with 1/4 repeater. D 55 mm.