15c Dark Blue (274). Top imprint and plate no. 52 block of six with wide selvage, original gum, deep rich color on bright paper, bottom right stamp natural vertical gum wrinkle and small ink smear, bottom center and bottom right stamps few faintly toned perfs, otherwise Fine, a scarce plate block, the 15c was printed from two plates--numbers 52 and 264--the latter has a different style of imprint

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