Swiss gold hunter with chronograph and register Circa 1915

Gold keyless lever pocket watch 
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A fine Swiss, keyless, 18k gold, hunting cased pocket watch with chronograph and instantaneous 30-minute register, circa 1915. The front cover is decorated with a monogram, dedication inside. Hinged cuvette engraved with various Longines Grand Prix award medals. White enamel dial with bold painted Arabic numerals, outer Arabic minute and fifths of a second chronograph division, subsidiary dials for the seconds and the 30-minute register. Pink gold Louis XV hands. A rhodium-plated movement, 19 jewels, straight-line lever escapement, cut bimetallic balance with screws, blued steel Breguet balance spring, index regulator. Dial, cuvette and movement signed.
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Diameter: 55 mm
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Signed: Longines  Swiss