Type: Mark
Location: Platform base, front
Inscription: "W.\M WILL/ PHILA/ DELPHIA" in rectangular arched cartouche, bird's head
Type: Mark
Location: Platform base, back
Inscription: "W.\M WILL/ PHILA/ DELPHIA"
Type: Mark
Location: Platform base, front, inside and inverted
Inscription: "LONDON", stamped
Type: Mark
Location: Platform base, back, inside and inverted
Inscription: "LONDON", stamped