Swiss 18k yellow gold keyless hunting cased watch Circa 1921

Gold  lever dress watch 
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A Swiss, 18K yellow gold keyless hunting cased dress watch, circa 1921. Accompanied by a fitted box and the Extract from the Archives. Made for l’HorlogerieEberhard, Milan by Patek Philippe & Cie., Genève. Hinged gold cuvette. Platinum-plated dial, silver with black champlevé Breguet numerals, outer minute track, subsidiary seconds. Blued steel spade hands.

A frosted gilt movement, 17 jewels, wolf’s tooth winding, straight-line moustache lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator. Dial, case and movement signed.
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Diameter: 50 mm
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Signed: Patek Philippe & Co. Genève