Marking:  Leopard's head crowned (London assay office mark);  Lion passant (English quality mark for sterling);  O (London date letter for 1749–50);  G D (script), in reserve (unidentified maker's mark).
Location of marks: All marks inside box and  repeated inside of lid.
John L. Cadwalader (until 1914; bequeathed 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