Ref. 31015, case n° 1220, made circa 1990
Case three body polished and brushed steel, snap back, rectangular chronograph buttons. silver dial with tachymeter scale device to 300 units per hour in red and blue, applied indices and 12 and 6 Arabic numerals, a black baton, two auxiliary dials at 3 and 9 o’clock respectively registers the 30-minute and continuous seconds, chronograph seconds in the center, 1872 manual winding movement caliber,leather strap with steel Eberhard & Co buckle.
Case, dial and movement signed.
Diam. 32 mm, thickness 11 mm