Swiss hunting cased single button chronograph Circa 1914

Gold full hunter chronograph lever watch by Patek Philippe
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A fine and rare Swiss 18 carat gold hunting cased single button chronograph keyless lever pocket watch, circa 1914. Lever movement, manual. Silvered dial with Breguet numerals. Plain Bassine style case. Movement, dial and case signed. Comes with an Extract from the Archives confirming production of the watch movement in 1914 and the subsequent sale of the timepiece on 8 June 1973, pouch.
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Diameter: 52 mm
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Signed: Patek, Philippe & Co, Genève