Swiss 14 carat pink gold hunting cased lever pocket watch Circa 1911

Gold keyless winding pocket watch
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A Swiss 14 carat pink gold keyless winding pocket watch made by International Watch Co., Schaffhausen, circa 1911. An engine turned case back with, in the center an escutcheon. A white enamel dial with Breguet numerals, outer minute track, subsidiary seconds at 6 and decorative pink gold Louis XV hands. A gilt brass, ¾ plate movement, going barrel with patented device, gold screwed chatons, straight line lever escapement, cut bimetallic compensated balance with gold poising screws and blued steel hairspring with terminal curve, polished steel index regulator with swanneck spring and micrometric screw. The dial, case and movement are signed.
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Diameter: 52 mm
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Weight: 99 g
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Signed: International Watch Co., Schaffhausen
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Accompanied by a copy of the invention patent.
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Movement based on the Swiss invention patent No. 31 457, delivered on May 11, 1904, to Fabrique d’Horlogerie de J. Rauschenbach, Schaffhausen, for a device for limiting the winding of barrel type watch movements.