German gold pocket watch with chronograph Circa 1893

Open faced pocket watch by A. Lange & Söhne
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A German very rare Glashütte pocket watch with chronograph without minute hand, circa 1893.
Sold on March 24th, 1893 to company Robert Pleissner, Dresden for 605 marks – with Lange extract from the archives.
This watch consists, an 18 carat pink gold case, a white signed enamel dial with Roman-, Arabic Numerals, a subsidiary dial and a center for the seconds and decorative gold hands. It has a 3/4 plate movement and a gold screw compensation balance.
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Diameter: 52 mm
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Weight: 113 g
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Signed: A. Lange & Söhne Glashütte B/Dresden
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In the early 1870’s Richard Lange (1845-1932) started designing a new chronograph which had the mechanism above the train, so that the mechanism could be attached to a “normal” watch movement. The upper seconds bearing received a new bridge and acted as the bearing for the clutch lever. A central chrono wheel with an upper steel bridge was fed through the minute wheel and all levers and springs were highly ground and bevelled. The mechanism was operated by a pusher in the crown, with the sequence being start, stop and reset. The most basic version only had one chronograph hand, chronographs with minute counters were much more complicated.