Great Britain 1973 9d British Explorers (Charles Sturt) error, SG927d.
A very fine unmounted mint, with full original gum, example with brown-red omitted. The missing colour results in the loss of the rivers on the map of Australia in the background.
Offered with an example of the normal stamp for comparison.
A scarce QEII stamp error. Pierron records only 30 mint examples.
Stanley Gibbons catalogue value: £950.
