Great Britain 1877 4d sage green Telegraph Plate 1, SGT5var

Great Britain 1877 4d sage green Telegraph Plate 1, SGT5var.

A superb unused bottom left hand corner marginal imperforate block of six with original gum, lettered 'AD-BF' (four stamps unmounted mint with full original gum), showing small part sheet inscription.

Each stamp is overprinted "SPECIMEN" type 9.

GB Specialised Catalogue No: L211t.

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