Great Britain 1966 4d British birds (Ordinary) error, SG696ad.
A very fine unmounted mint, with full original gum, se-tenant block of four with greenish yellow omitted affecting all four stamps.
Offered with an example of the normal block for comparison purposes.
A scarce and attractive QEII error of missing colour. Pierron records only circa 30 mint blocks.
SG Catalogue Value: £2,000.
