Swiss gold watch with two horological complications Circa 1913

Gold open faced lever chronograph by Longines
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A fine and rare Swiss keyless, 14K yellow gold pocket watch with two horological complications by Longines, circa 1913. Gilded brass movement with going barrel, straight-line lever escapement, monometallic balance with gold poising screws and self-compensating hairspring with terminal curve, index regulator micrometric screw.
White enamel dial, gilt spade hands, two subsidiary dials.
Round-shaped cased pocket watch, subsidiary seconds at 6 and two horological complications: 1/5 second chronograph, activated by the round push-piece located on the winding-crown) and telemetric scales graduated for 1 000 meters and for 100 meters, Instantaneous 30-minute recorder, subsidiary dial at 12 o’clock.
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Dial, case and movement signed.
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Diameter: 52 mm
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Signed: Longines  Swiss