Universal

nickel lever movement, 17 jewels, mono-metallic compensation balance, black matte dial, white baton numerals with luminous dots above, luminescent hands, four silvered engine turned subsidiary dials for constant seconds, date, 30-minute and 12-hour registers, apertures for day and month, circular case with faceted lugs, black bezel calibrated for tachometer, screw-down case back, case, dial and movement signed, with a stainless steel sprung Universal link bracelet and folding clasp, accompanied by original Tri-Compax instructions and swing tag.

The Universal Compax models are amongst the most classic of all 20th century complication wristwatches. Highly popular throughout the 1940s and 1950s, the original 'Tri-Compax' was made until the mid 1960s. Today these vintage models are coveted by collectors and enthusiasts alike for their classic styling and complication movements. The present example is unusual for retaining its original instructions and swing tag.