View PDF Shape Name Iona (Square Ridged) Potter Name Powell & Bishop Photo Type Item - Photo Item Platter - Various Sizes Notes Impressed registration number 51148 is unknown. This dates to the 1880's. Enlarge Image Associated Images Iona (Square Ridged) | Powell & Bishop | Platter | Mark | 003 Iona (Square Ridged) | Powell & Bishop | Platter | Mark | 002