Marking:  Leopard's head crowned (London assay office mark);  U within lozenge (?) (London date letter for 1577-1578);  lion passant (English quality mark for sterling);  WC over a grasshopper (mark of William Cocknidge ?).
Location of marks: All on lower edge of neckband, under base, and on dome of cover
Henry Willett (in 1882 and 1888) ; J. Pierpont Morgan (until 1917; to MMA)
Artist: James Cox (British, ca. 1723–1800)Date: 1766Medium: Case: gold with diamonds and paste jewels set in silver, pearls; Dial: while enamel; Movement: partly gilded brass and steel, wheel balance and cock of silver set with paste jewelsAccession: 1982.60.137On view in:Gallery 540