German gold lever watch with unusual crown wind Circa 1875

Gold open faced lever watch by Albert Lescow
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A German 18 carat gold open faced lever pocket watch with an unusual crown wind invented by Olivier Courvoisier of Neuchâtel, circa 1875. Bridge movement, lever escapement, gold screw compensation balance. White enamel dial with Roman hours, outer minute divisions and sunk subsidiary seconds at 6 o’clock. Plain band and bezels, the case back engine-turned. Dial signed, case numbered.
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Diameter: 48 mm
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Weight: 91 g
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Signed: A. Lescow Osnabrück
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Albert Lescow was a member of the Urania Glashütte association. His father was also a watchmaker in Osnabrück and had learned the art of watchmaking with master Heyl. Today’s modern watch and clock wholesaler Baron is a descendant of Lescow, who died in World War I.|
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The Musée d’Horlogerie in Geneva exhibits an ébauche with anchor escapement and the same type of winding system. It was developed by Oliver Courvoisier, who received its English patent No. 1114 in 1873.