CASE: Three-body, solid, polished, lapidated lugs, inverted bezel, snap-on case back.DIAL: Silver with applied yellow gold baton indexes, subsidiary guilloche dials for the seconds and the 30-minute register, outer seconds/minutes track, outer red telemeter scale and outermost blue tachometer scale. Yellow gold baton hands.MOVEMENT: Cal. 30CH, rhodium plated, 18 jewels, straight line lever escapement, monometallic balance, shock absorber, self compensating Breguet balance spring, index regulator. Dial, case and movement signed, in good conditionDIAM: 38 mm THICKNESS: 11 mm