Great Britain 1972 5p British Polar Explorers (Martin Frobisher 1535-1594), SG898Eya.
A very fine unmounted mint right hand marginal example with full original gum. Error of missing gold colour (Queen's head) and phosphor omitted.
Offered with an example of the normal stamp for comparison.
A scarce and reasonably priced QEII error. Pierron records only 98 mint examples.