A silver pair cased centre seconds verge pocket watch with painted dial and simple automaton, Jas. Jones, London, No.15406, 1799,

细节
A silver pair cased centre seconds verge pocket watch with painted dial and simple automaton, Jas. Jones, London, No.15406, 1799,
enamel dial decorated with a landscape and a windmill with revolving sails, eccentric meantime dial, outer Arabic seconds, gilt fusee movement signed Jas. Jones, London, No.14506, plain pair cases with London marks for 1799, diameter 58mm.
See Colour Illustration (Plate 2)