Swiss Geneva deck watch with 36h power reserve Circa 1919

Silver large open faced lever pocket watch
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A very fine and large Swiss silver open faced keyless lever deck watch with 36 hour power reserve made by Patek Philippe in Geneva, circa 1919. Accompanied by an extract from the chronometer archives by Andreas Hidding. The polished case with a signed dome. Silvered dial with Roman hour numerals, an outer minute track, auxiliary seconds at 6 o’clock, 36 hour power reserve indicator at 12 and blued spade hands. Frosted gilt Quality Extra bridge movement with wolf’s tooth winding wheels, blued sapphire jewels, the Geneva quality hallmark, a Guillaume gold screw compensation balance, an index spring fine adjusting device, a counterpoised lever, ruby endstone on the lever and escape wheel, and diamond endstone on the balance.
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Diameter: 61 mm
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Weight: 186 g
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Signed: Patek Philippe & Cie Genève
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In 1919, this watch participated in the chronometer test at the Geneva Observatory, “1st Class Chronometers, 3rd Prize”, achieving 732 points, taking the 21st place out of 81 chronometers in the category “First Class Chronometers.”
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Right from the start, Patek Philippe & Co specialized in making pocket and onboard chronometers such as marine chronometers and deck watches. This brought them success in national and international chronometer tests. Since 1900, they have been awarded 764 prizes by the Geneva Observatory, of which 187 were first prizes.
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In a time when other manufacturers reduce their product range to their bestselling items, Patek Philippe has always retained the complete spectrum, from the simplest to the most complicated of all watches, the Grande Complication. This was never at the expense of quality but always ensuring that the highest standards were met in design and production, fine regulation and service.