German silver precision watch with patented dial Circa 1931

Rare watch with twelve jumping hour numerals
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A rare, one of only three examples, quality 1A precision watch with 24 hour jumping numerals and according to the number on the inside of the spring lid, possibly manufactured by the Glashütte watchmaking school, Germany, circa  1931. This watch features a silver case with gold hinges and the Glashütte case punch. The silvered and grained dial is marked ČS. Pat. Čiselnik Glashütte/SA (Czechoslovak Patent Dial, Glashütte/Saxony) and features an outer minute and hour track with 12 windows for displaying the jumping hour numerals from 1-12 and 13-24, which automatically adjust, a subsidiary seconds dial at 6 o’clock and Breguet blued steel hands. The Glashütte precision movement, in best quality 1A is equipped with a lever escapement, screwed gold chatons, a fine adjusting device, a gold lever and the plate is marked “Glashütte precision watch”.
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Diameter: 55 mm
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Weight: 114 g
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Signed: No name
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This is one of the rarest Glashütte pocket watches. As early as 1886, there was a small series of three pieces manufactured by Lange & Söhne according to the Osborne patent. In 1931, there was another small series of three watches, marked Čiselnik patent (patented dial), possibly manufactured in the Glashütte watchmaking school according to the low four digit number on the inside of the spring lid.