A gold pair cased cylinder pocket watch, Benjamin Gray & Justin Vulliamy, London, rcx, 1758 and later,

細節
A gold pair cased cylinder pocket watch, Benjamin Gray & Justin Vulliamy, London, rcx, 1758 and later,
white enamel dial with Roman numerals, outer Arabic five minutes, blued steel beetle and poker hands, signed gilt fusee movement with cylinder escapement, diamond endstone, square baluster pillars, plain inner case with London marks for 1758, later and associated engine turned outer case with London marks for 1820, diameter 46mm.