Marking: [1] Leopard's head crowned (London assay office mark);
[2] Lion passant (London assay office mark);
[3] D in pointed shield (date letter for 1581–82)
[4] M with line across in shield with pointed base (unidentified maker's mark);
Location of marks:
[1]-[4] on underside of bottom of cup
[1],[2],[4] on inner rim of cover
