Great Britain 1985 12p Christmas Pantomime Characters (Principal Boy) error, SG1303a.

A very fine unmounted mint, with full original gum, imperforate vertical pair.

A scarce QEII imperforate error. Pierron records only 10 mint pairs in existence.

This exceptionally rare modern British stamp error was previously valued in the Stanley Gibbons catalogue at a price of £4,750. Astonishingly, they reduced this price in the most recent edition to £850, which we believe makes this error a remarkable bargain for such a rare philatelic item.