Great Britain 1873 4d dull vermilion Plate 12, SG93

Great Britain 1873 4d dull vermilion Plate 12, SG93.

A superb well centred unused block of six, with original gum, lettered 'OA-PC' (three stamps unmounted mint with full original gum).

A scarce multiple of this Queen Victoria surface printed stamp, in exceptionally fine condition and rare as such.