Swiss gold extra quality keyless pocket watch Circa 1910

Gold watch made for Tiffany & Co
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A Swiss 18 carat yellow gold open faced keyless pocket watch made by Patek Philippe in Geneva, circa 1910. A polished case back with a white enamel dial, radial revolving Arabic numerals, outer minute track, subsidiary seconds at 6 and blued steel Spade hands. An extra thin, rhodium plated movement, going barrel, gold screwed chaton on the central wheel, straight line equilibrated lever escapement, cut bimetallic compensated balance and blued steel hairspring with terminal curve, polished steel index regulator, Extra quality, eight adjustments. Signature on the case, dial and movement.
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Diameter: 45 mm
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Weight: 62 g
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Signed: Patek Philippe, Geneva