German silver 24 hour jumping numerals watch Circa 1931

Precision watch which is one of three examples
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A scarce precision watch 1A, one of three examples known, with a very unusual 24 hour jumping numerals dial, probably made at the Watchmaking School in Glashütte, Germany, circa 1931. The numbered case of this watch was crafted from silver has gold hinges and has the Glashütte case punch. The original silvered and grained dial is marked ČS. Pat. Čiselnik (Czechoslovakian Patent Dial) and Glashütte ^I/SA and features Arabic jumping hour numerals, a subsidiary seconds dial at 6 o’clock and Breguet blued steel hands. The best quality 1A movement marked “Glashütte precision watch” is fitted with a Glashütte precision lever escapement, screwed gold chatons, a fine adjusting device, an a gold lever.
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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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The item presented here 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 (dial) patent, possibly manufactured in the Glashütte watchmaking school, according to the number.