Marking:  Britannia (English quality mark for sterling);
 Lion's head erased (English quality mark for sterling);
 Roman D (London date letter for 1719–20);
 FO, pierced mullet below, incomplete above (maker's mark for Thomas Folkingham).
Location of marks:
– on underside
 on insetting rim of lid
Irwin Untermyer (until 1968; to MMA)