A rare English humpback carriage clock is coming up for sale at Dr Crott in Frankfurt on May 6. The 6in (16cm) high calendar timepiece with phases of the moon and an English lever escapement was manufactured in the 1890s by Jump of London.
The design of the humpback clocks is based on the work of the horological genius Abraham Louis Breguet, who from 1812 produced about 10 clocks of this distinctive style. Members of the Jump family were making clocks from 1812 onwards when Richard Huyton Jump joined the workshop of the renowned London maker Benjamin Louis Vulliamy.