German silver lever with patented jump hours Circa 1922

Silver Glashütte precision watch
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An extremely rare silver open faced Glashütte pocket watch with patented jumping numerals, circa 1922. The ¾ plate movement with a piston tooth lever escapement and gold screw compensation balance. Silvered dial with round cutouts for displaying the hours 1-12 and 13-24, outer minute divisions, subsidiary seconds at 6 o’clock and blued heavy moon hands. The plain case with a gold crown and hinge. Case numbered, dial signed ČS.PAT.ČÍSELNÍK Glashütte I/SA.
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Diameter: 55 mm
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Weight: 114 g
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Signed: No name