1c-90c 1861-66 Issue, Red Control Number Ovpts., Ty. J (63S-J to 78S-J).
The complete set of ten different, original gum, generally with h.r., mixed centering as always and a couple minor flaws, 5c with double perfs at left, Very Good-Fine, these are numbered from the highest denomination to the lowest starting with the 90c "1234", 30c "2345", 24c "3456" and so on except for the 15c which has only three numbers ("235"), research by Michael Plett and Ken Gilbart (Chronicle
Aug. 2012, pp. 214-226) solved the long-standing mystery of these specimens and determined that the overprints were applied by a bond-numbering mechanical device, it is believed that only one-half pane of each were overprinted
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