Universal Uni-Compax.Universal, Geneve, Uni-Compax, case No. 571661. Made in.the 1930's..Fine, 18K yellow gold wristwatch with square button.chronograph, register and tachometer scale.
C. Three-body, solid, polished and brushed, cadenza lugs.stepped bezel, snap-on case back..D. Matte silver with painted black Arabic numerals, subsidiary.dials for the seconds and the 45 minute-register, outer.minute/seconds divisions, outermost blue tachometer scale..Blued steel Feuille hands..M. Cal. 285, gilt brass, 18 jewels, straight line lever.escapement, cut-bimetallic balance, self-compensating blued.steel Breguet balance spring, index regulator..Dial, case and movement signed..Dim. 34.5 mm. Thickness 11 mm.