Swiss keyless lever split-seconds chronograph dress watch Circa 1935

Stainless steel split-seconds chronograph
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A fine and rare Swiss staybrite stainless steel open faced keyless lever dress watch with split-second chronograph, tachometer and 30-minute register, circa 1935. Silvered two-tone sector dial with an Arabic 6 and 12 and further hour indexes, outer minutes and fifths of a second track with Arabic numerals, an outermost blue tachometer scale calculated for 1000 meters, engine-turned subsidiary dials for the seconds and 30-minute register, sword hands. Polished and brushed case. Dial signed, case signed and numbered.
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Diameter: 46.5 mm
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Signed: Jaeger-LeCoultre Swiss