Inscription: Pricked near lip: 16 (TW,S above) 57 (owners' initials and date)
Marking:  Leopard's head crowned (London assay office mark);  Lion passant guardant (English quality mark for sterling);  O (London date letter for 1651–52, poorly struck);  TD(?) a pellet between, 2 pellets above, a rose below, (possibly).
Location of marks: – on body, near lip;  under foot between first two and last two numbers of the year 1657
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