Inscription: Initials SP with eight-pointed star above and a star between and to each side of the initials (pricked on handle)
Marking:  Leopard's head crowned (London assay office mark);  Lion passant (English quality mark for sterling);  J in pointed shield (date letter for 1646-47);  Bird with branch in its mouth (unidentified maker's mark).
Location of marks: - on base and on undecorated center of lid
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