Fine large duplex movement by this famous firm, circa 1820.
Fullplate fusee movement with finely engraved cock of typical 'narrow nosed' shape, as favoured by the firm at this period. Duplex escapement retaining its original ruby roller, now so often missing or replaced in steel. Flat steel balance with spiral balance-spring and detachable, screw held stud, a sign of top quality finishing. 51 mm diameter, 11.5 mm deep, not including dial or centre arbor.
Justin Vulliamy and son Benjamin, Clockmakers to King George III and the Prince Regent, later George IV, suppliers of best quality clocks and watches to the English aristocracy, the new Houses of Parliament as well as many London clubs and institutions. NB: The code used by this firm, which changed from three to four letters around 1812, has yet to be fully understood.
Lacking dial, hands and motion work, and balance-staff pivots broken. Some rust showing on balance, otherwise the movement in good original but somewhat dirty condition, the brass-edge clearly scratched 'silver dial' - it must have been a handsome watch. Not working, but worth the price for the ruby roller alone.
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