Swiss gold and black enamel Art Deco pocket watch Circa 1925

Gold open faced lever pocket watch 
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A Swiss 18 carat yellow gold and black enamel Art Deco pocket watch, circa 1925. Accompanied by its original fitted box. A polished case, front, bow and back bezel with black enamel. Champagne dial with Arabic numerals, outer minute track, subsidiary seconds and yellow gold Breguet hands. Rhodium-plated movement, 18 jewels, Geneva striping decoration, movement with a double seal of Geneva, straight-line lever escapement, cut bimetallic compensation balance, blued steel flat balance spring, index regulator. Dial, case and movement signed.
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Diameter: 44 mm
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Thickness: 9 mm
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Signed: Henri Blanc  Genève
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Accompanied by its original fitted box