English humpback carriage clock coming up for sale at Dr Crott in Frankfurt on May 6 estimated at €90,000-120,000.

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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.

Among Vulliamy’s assistants was Sylvain Mairet, who had learnt his craft from Breguet and who was certainly familiar with his master’s humpback clocks. After Vulliamy’s death in 1854, two of Jump’s sons set up business as his successor, trading in various incarnations until 1934. Among their specialities were an unknown number of such silver-cased humpback clocks with various technical complications, many of which are well documented.

This particular example was previously unknown and has come from a private collector. It has a guide of €90,000-120,000.