Swiss gold five-minute repeating lever watch Circa 1917

Gold five-minute repeater by Patek Philippe
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A fine Swiss, yellow gold five-minute repeating open faced watch by Patek Philippe, made in 1917. Retailed by Tiffany & Co. Nickel lever Extra movement, repeating via two hammers on two gongs. Gilt dial, painted Breguet numerals, blued steel spade hands, subsidiary seconds, outer minute track. 18K gold case with a coat of arms,  slide to activate the repeater at 3 o’clock, dial signed by retailer, case and movement signed by maker and retailer.
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Diameter: 47.5 mm
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Signed: Tiffany & Co. Switzerland
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With a gold chain and pocket knife engraved with a snake motif.