6c Treasury (O75). Top imprint and plate no. 51 block of 20 with selvage at sides, original gum, eight h.r., few Mint N.H., some perf separations including few sensibly reinforced, vertical crease does not affect plate block, Fine appearance and a rare multiple, Power Search contains only an unused block of six and only four in Mint N.H. condition (contained in the block), Scott Retail as plate block of twelve and singles

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