Swiss lever chronograph with 30 minute register Circa 1910

Rose gold full hunter chronograph 
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A Swiss 18 carat rose gold hunting cased chronograph made by Patek Philippe in Geneva, circa 1910. Sold on April 6th, 1916. The movement with a lever escapement. White enamel dial with Arabic hours, an outer minute track with fifth of a second divisions and Arabic five minute numerals, constant seconds at 6 o’clock, a 30 minute register at 12 and spade hands. Case, dial, cuvette and movement signed, case and movement numbered. Comes with an Extract from the Archives confirming the production of this watch in 1910.
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Diameter: 52 mm
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Signed: Patek, Philippe & Cie Genève