English hunting cased lever watch with power reserve Circa 1920

Gold watch with up and down indication by Karl Zimmerman
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An English gold hunting cased, free sprung lever watch with up/down indication and start/stop slide, circa 1920. This watch features a gilt 3/4 plate jewelled movement with a keyless winding free sprung lever. It has a white enamel dial marked with Roman numerals for hours, an outer track for minutes and seconds indicated by Arabic numerals at five minute intervals, an up and down indicator, a central seconds hand, and blued steel spade hands. The case is made of 18k gold and includes hinged covers, a polychrome painted enamel monogram, and a polychrome painted enamel coat of arms. The cuvette is signed L.M. Dennis May 11th, 1889, and the movement is signed Karl Zimmerman Liverpool.
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Diameter: 54 mm
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Signed: Karl Zimmerman Liverpool
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Movement is running. The start/stop slide function is working. The case is in good overall condition, with some surface wear throughout. The enamel on the coat of arms and the monogram is in good condition. The dial is in very good condition.
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Karl Zimmerman, also known as Charles, was a chronometer and watchmaker based in Liverpool from 1845 to 1885. In 1845, he operated from Heath Street, moved to Hamilton Terrace in Edge Hill by 1847, and settled at 3 Bennett Street in 1853. Originally from Germany, he gained a reputation as a skilled chronometer maker and supplied Victor Kullberg.
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Zimmerman was mainly known for producing high quality pocket watches featuring power reserve indicators. Most of his watches were manufactured in Clerkenwell, London. It is rare to find a sophisticated example from Liverpool like the one displayed here. Notably, Zimmerman submitted several watches that received Class I certificates during examinations at the Yale College Observatory in 1884.
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He married Adelaide Zimmermann at St. Peter’s Church. Their daughter, Ellen Zimmermann, was born in 1845 and baptised at St. Peter’s on March 3. He likely later worked alongside his son, Lawrence W. Zimmermann, who may have continued under his father’s name as a supplier of chronometers.