Rare French gold and leather pair-cased verge watch Circa 1660

Gold verge with leather covered outer case by Estienne Hubert 
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A rare French gold and black leather pair-cased one-handed verge pocket watch, circa 1660. Full plate movement, chain and fusee, pierced Egyptian pillars, two-arm steel balance without balance spring, fine florally engraved and pierced balance cock. Gold champlevé dial with Roman hours, inner half-hour markers, the centre chased and engraved, a single blued steel hand, partially gilt. Black leather outer case with gold piqué decoration, plain gold inner case. Movement signed.
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Diameter: 48 mm
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Weight: 98 g
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Signed: E Hubert Roüen
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Estienne (Étienne) Hubert was born in 1634 and died around 1720. He was a renowned clockmaker in Rouen, France from 1655 until 1720. Estienne became a master in 1656. The British Museum, the Guildhall Museum and the Victoria and Albert Museum all own clocks created by Hubert.