Swiss pedometer wind lever in a full hunter case Circa 1880

Silver Loehr perpetual pocket watch
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A Swiss pedometer wind lever in a silver full hunter case, circa 1880. Gilt three-quarter plate movement with going barrel wound by an oscillating weight. Plain cock with polished steel regulator, compensation balance with blue steel spiral hairspring. Club foot lever escapement. Automatic winding work set above the plate carries a weight set at the side which oscillates as the wearer walks, safety mechanism to avoid over-winding. Signed white enamel dial with subsidiary seconds, Roman numerals, and blue steel hands. Engine turned silver full hunter case, the fly-spring for the font cover lacking. Signed and numbered silver cuvette, aperture to allow the watch to be wound by key if desired, and central thumbwheel for handset.
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Diameter: 49 mm
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Signed: Loehr Patent Perpetuale
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August von Loehr of Vienna took out patents for the safety mechanism in Britain and USA in 1878 and 1879. See Pocket Watches by Reinhard Mieis page 125 for a similar watch and page 41 for details of the mechanism.