Documentary, 1871, Second Issue, 20¢ Blue & Black, Center Inverted, excellent centering for this, deep intense color on bright paper, light herringbone cancel and central strike of blue Mar. 30, 1872 oval cancellation, Extremely Fine and choice; with 1995 P.F. certificate. Scott No. R111a  $7,000. ONE OF THE FINEST OF ONLY 15 RECORDED EXAMPLES OF THE 20¢ SECOND ISSUE REVENUE INVERT. ONE OF THE GREAT RARITIES OF THE ISSUE. Most examples of this center inverted error have perforations touching one side. The Larry Lyons census recorded 13 singles and 1 pair. The example offered here, with perforations clear on all sides is a great condition rarity, especially desirable with a blue handstamp cancel. $0 (Image)