Fine Swiss pink gold precision lever pocket watch Circa 1910

Gold keywinding pocket watch
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A Swiss 18 carat pink gold open faced keywinding pocket watch, made by Election in Le Locle, circa 1910. A solid, plain case back with the cypher AS engraved in fine cut. White enamel dial with suspended Breguet numerals, subsidiary seconds at 6 and blued steel Spade hands. A matt gilt brass movement, going barrel, straight line lever escapement, cut bimetallic compensated balance with gold poising screws and blued steel hairspring with terminal curve, polished steel index regulator with micrometric screw. Signature on the dial, case and movement.
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Diameter: 53 mm
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Weight: 83 g
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Signed: Election, Le Locle
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Accompanied by a copy of the invention patent.