An English skeleton clock of scroll design, the eight-day duration single-fusee movement is inverted within the plates to allow for the detent escapement to run a subsidiary seconds dial utilising the coup perdu detent escapement with an Evans pewter bob to the wood-rod pendulum.The shaped silvered chapter ring is of typical Evans design and has black Roman numerals.See Derek Roberts, British Skeleton Clocks, pub. Antique Collectors Club 1987, fig. 3/63a describing a near-identical scroll framed example as used by Evans to utilise his detent escapement which Derek described as:Evans detent escapement was introduced in circa 1860 firstly to some of the Scott Memorial clocks and later to an attractive scroll design with a floral influence (as this example). Because of the design of the escapement the train was inverted and thus a large seconds ring appeared at the bottom half of the dial. The escape wheel, as on a chronometer, is released only every other beat (coup perdu) an...