6c Brown, Treasury (O75). Mint N.H. bottom imprint and plate no. 51 block of 20, with side selvage and comprising the bottom two rows of the plate, deep rich color, natural gum skips in two stamps at bottom right (outside the plate block), nicked in selvage below the imprint, some natural paper bends and some perf separations mostly confined to selvage

FINE AND EXTREMELY RARE MINT NEVER-HINGED PLATE BLOCK OF 20 OF THE 6-CENT TREASURY OFFICIAL ISSUE.

A Power Search review failed to find any other Mint N.H. blocks of this issue -- plate blocks or otherwise. Scott value as plate block of 12 and singles

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