Proprietary, 1871, 1¢ Green & Black, Center Inverted, remarkably well centered within balanced margins, rich colors on bright paper, blue handstamp cancel; internal paper split, fresh and Extremely Fine appearance; with 2016 P.F. certificate. Scott No. RB1d  $5,250. AMONG THE FINEST OF ONLY 23 RECORDED EXAMPLES OF THE 1¢ PROPRIETARY INVERT ON VIOLET PAPER. The Larry Lyons' revenue census records 23 examples of the 1¢ Proprietary invert on violet paper. Of these, only five are well-centered with each having varying faults that affect the appearance. The well centered example offered here without any creasing or perf flaws is exceptional. $0 (Image)