12c Dark Violet, Special Printing (173). Without gum as issued, scissors-separated as usual but with intact perfs on three sides, deep rich color, tiny thin spot at top, Very Fine appearing example of the 12c 1875 Continental Special Printing, only 71 are contained in our census, Census No. 173-UNC-42, Colson backstamp, with 1969 P.F. certificate, P.F. certificate No. 214596 no longer accompanies