1888 10c on 4d mauve with Type 2 local surcharge, top three rows of the sheet with two Plate numbers, o.g.,  eighteen stamps of which seventeen are unmounted.  Central fold and some gum wrinkles, but a fine showpiece.  SG 28 (Image)

1904-7 $5 grey-green and black upper right corner block of four with Plate 1, lightly hinged o.g.  An extremely rare Plate number multiple,  SG 93, £1500 as basic stamps (Image)

1964 Self government 1c, error ORANGE-YELLOW (KNOB) OMITTED, upper right corner block of 4 with '051' sheet number, unmounted o.g. Unique positional block from the original discovery sheet as illustrated in Pierron. Remarkably accompanied by a matching normal block showing next consecutive sheet number '052'. SG 217b (Image)