UNIVERSAL GENEVA TRI - COMPAX Reference: 12552. serial number: 1129457. Case in 18k yellow gold. Light grey dial, highlighted by four counters (seconds, date and moon phases, minute totalizer, hour totalizer). Hand-wound mechanical movement (calibre 287) no. 246790. Leather strap on gold-plated metal buckle. Plexiglas glass. Circa 1950. Size: 36 mm. Gross weight: 50.1 g. An 18k gold wristwatch mechanical movement, by Universal Genève. Circa 1950.