Swiss gold half hunting cased lever pocket watch Circa 1916

Gold keyless winding pocket watch
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A Swiss 18 carat yellow gold half hunting cased keyless pocket watch made by International Watch Co., Schaffhausen, circa 1916. Cover and case back are polished, the cover is engraved with black enamelled radial Roman numerals, the engraved caseback with the cypher B.A.G. A white enamel dial with radial Roman numerals, outer minute track, subsidiary seconds at 6 and blued steel pear hands. A gilt brass, ¾ plate movement, going barrel, gold screwed chatons, straight line lever escapement stamped S & Co (Stauffer & Co., London and La Chaux de Fonds), 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. Signature on the dial.
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Diameter: 50 mm
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Weight: 114 g
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Signed: International Watch Co., Schaffhausen
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Movement based on the Swiss invention patent No. 55 231, delivered on March 28, 1911, to Uhrenfabrik von J. Rauschenbach’s Erben, vormals International Watch Co., Schaffhausen, for a Zifferblattbefestigungsvorrichtung (Dial fixing device).