A fine George III mahogany-case 8-day brass dial longcase clock. Richard Donisthorpe, London,...

A fine George III mahogany-case 8-day brass dial longcase clock. Richard Donisthorpe, London, circa 1775. The 12-inch break-arched dial having a silvered chapter ring with Roman hours and Arabic minutes framing a matted centre with subsidiary seconds dial over signature crescent engraved "Rich'd Donisthorpe London" in cursive script, within rococo scroll spandrels, the five-pillar movement rack-striking on a bell, the case with pagoda-topped hood having pierced fretwork panel between brass ball-and-spire finials on reeded pedestals over stop-fluted columns , the trunk with conforming quadrant columns  flanking a figured break-arched long trunk door with moulded border, on a panelled stepped base with bracket feet, 91.5", (231cm) high.