Great Britain Queen Elizabeth II 1966 4d British birds (ordinary paper), SG696aj.
A superb unmounted mint full original gum bottom left hand corner marginal cylinder block of eight with red-brown omitted affecting the legs of the robin, the blackbird and the red brown "1H" cylinder. Offered with a normal block for comparison.
A very attractive positional piece. Pierron records only 180 mint blocks of 4 in existence.