Swiss gold minute repeating lever chronograph Circa 1915

Gold hunting cased minute repeater by Zenith
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A very fine Swiss 18 carat gold hunting cased minute repeating chronograph keyless lever pocket, circa 1915. Rhodium-plated movement, Geneva striping decoration, 29 jewels, wolf’s tooth winding, straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator, repeating on gongs activated by a slide on the band. Gold hinged cuvette engraved with prize medals. White enamel dial with Breguet numerals, outer minute track and outermost fifths of a second divisions, subsidiary seconds and original gold spade hands. Massive, polished case. Dial, case, cuvette and movement signed.
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Diameter: 54 mm
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Signed: Zenith Swiss