Swiss chrome keyless chronograph with minute counter Circa 1920

Chrome open faced lever pocket watch 
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A Swiss chrome open faced keyless lever pocket watch, circa 1920. A chrome plain watch with a polished case back and two horological complications. The first one is a 1/5 second chronograph, activated by the single round push piece located on the winding crown, with scale graduated for 1,000 to 20,000 units and a half instantaneous 10-minute retrograde counter, one-third circle graduation at 12 o’clock. White enamel dial with suspended Arabic numerals and blued steel Pear hands. A gilt brass movement, going barrel, straight line equilibrated lever escapement, cut bimetallic compensated balance with gold poising screws and blued steel hairspring with terminal curve, polished steel index regulator, chronograph work on the top plate.
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Diameter: 57 mm
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Weight: 127 g
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Signed:  No name