Fine Swiss pink gold open faced pocket watch Circa 1905

Gold lever keyless pocket watch
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A fine Swiss 18 carat pink gold keyless winding pocket watch made by International Watch Co., Schaffhausen, circa 1905. An engine turned case back with in the center a circle. Inside the case back is engraved with the mention De Julio de Souza Velho. White enamel dial with Roman numerals, outer minute track, subsidiary seconds at 6 and steel pear gold hands. A gilt brass movement, going barrel,  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. The dial, case and movement are signed.
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Diameter: 50 mm
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Weight: 88 g
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Signed: International Watch Co., Schaffhausen
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Accompanied by the original fitted box.