Rare Swiss triple bridge tourbillon chronometer Circa 1910

Rose gold hunting cased chronometer 
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A very rare Swiss 18 carat rose gold hunting cased triple bridge tourbillon pocket chronometer, circa 1910. Retailed by L. Kramer & Co. Le Caire Fournisseurs de S.A. Le Khedive. Polished steel triple bridge jeweled movement, screwed gold chatons, pivoted detent escapement, bimetallic compensation balance with gold screws, blued steel balance spring, one minute tourbillon regulator with polished steel three armed carriage. Engraved gold cuvette. White enamel dial, Arabic numerals, gold Louis XVI-style hands and sunk subsidiary seconds. Plain case, applied gold initials ‘WB’ to the front. Cuvette signed.
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Diameter: 57 mm
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Signed: No name