a stainless steel chronograph wristwatch with registers, Le Coultre circa 1958

nickel lever movement, 17 jewels, mono-metallic compensation balance, iron cover over movement, silvered dial, applied triangular numerals, subsidiary dials for constant seconds, 30-minutes and 12-hours registers, outer ring calibrated for tachy- and telemeter, water-resistant-type case with faceted down turned lugs, case, dial and movement signed.