Swiss 18K yellow gold digital jump hour dress watch Circa 1930

Gold lever watch with interlaced monogram
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A very fine and rare Swiss, thin, 18K yellow gold, keyless, digital jump hour dress watch, circa 1930. Polished case, gold hinged cuvette, white champlevé enamelled interlaced L monogram on the back. Matte champagne dial, aperture for Arabic jump hour numerals, outer minute ring with five-minute Arabic markers, subsidiary sunk seconds. Blued steel lozenge hands. A rhodium-plated movement, 18 jewels, lever escapement, cut bimetallic compensation balance, blued steel flat balance spring, index regulator. Signed on dial, case and movement.
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Diameter: 43,5 mm
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Signed: Audemars, Piguet & Co  Brassus & Genève
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The case has some scratches