1865, 1c Dark Blue (25).
Plate 11-A, Ty. I-X, Pos. 1-10, two complete panes in an unused sheet of 20, large margins, two horizontal creases, one vertical, almost invisible unless held to light, Extremely Fine appearance, only four sheets of this size, and none larger, are known to exist, ex Ostheimer, Scott Retail as blocks and singles
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