Great Britain 1855 2d blue Plate 4 Specimens, SG23var

Great Britain 1855 2d blue Plate 4 Specimens, SG23var.

A superb right hand marginal block of six lettered KK-ML, lightly mounted on one stamp only, with full deckle edge selvedge and inscription, each stamp overprinted "SPECIMEN" type 2.

A magnificent multiple in exceptional quality, and a key rarity of GB philately.

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