Type: Mark
Location: Underside, center
Inscription: "T" and "D" flanking a lion, within an oval, stamped
Type: Mark
Location: Underside, center
Inscription: "T·D" in a shaped square, stamped
Type: Mark
Location: Underside, center
Inscription: An animal in a shaped square, stamped
Type: Mark
Location: Underside, center
Inscription: Seated Britannia in a shaped square, stamped
Type: Mark
Location: Underside, center
Inscription: Indistinguishable, stamped