Swiss gold minute repeating lever power reserve Circa 1919

Gold open faced repeating lever watch by Patek Philippe
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An extraordinary, rare Swiss 18 carat gold open faced minute reapeating lever pocket watch with 30 hour power reserve indication, circa 1919. Plain case. Silvered dial with Arabic numerals, sunken auxiliary seconds, 30 hour power reserve indication and blued spade hands. Rhodium plated bridge movement, fausses côtes decoration, 8 adjustments, 31 jewels, polished screws, two hammers, two gongs, wolfteeth winding wheels, gold screwed compensation balance, blued balance spring, index spring fine adjusting device, counterpoised lever, ruby endstone on balance, lever and escape wheel. Dial signed, movement signed and numbered.
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Diameter: 47 mm
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Weight: 73 g
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Signed: Patek, Philippe & Co Geneva-Switzeland