Fine German silver one handed coach clock with alarm Circa 1700

Silver coach clock by Georg Henner 
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An extremely rare and fine German silver one handed Baroque coach clock with alarm, circa 1700. Full plate movement, chain and fusee, a lavishly pierced and florally engraved barrel for the alarm clock, one hammer, verge escapement, gold plated regulating disc and three arm steel balance. Silver champlevé dial with Roman hours, half hour markers, an outer minute track, a central alarm chapter ring with Arabic numerals and single blued steel hand. The case is pierced and elaborately engraved with acanthus, volutes, birds of prey and a mascaron. Movement signed.
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Diameter: 88 mm
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Weight: 636 g
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Signed: Georg Henner Heidelberg
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Georg Henner was a respected Heidelberg master. Coach clocks by Henner are quite rare. In the standard work ‘Die Kutschenuhr’ by Lukas Stolberg, only one carriage clock is listed without any additional complications. It was part of the Graf Adelmann Collection in Cologne.