1879, 15¢ Red Orange, bottom margin plate block of 12, immaculate Post Office fresh original gum which is never hinged, exceptionally well centered with perforations completely intact, brilliant rich color that is almost unheard of on this soft porous paper issue, wonderfully bright and fresh, an Extremely Fine gem; with 2002 P.F. certificate. Scott No. 189  $8,500 for hinged. A MAGNIFICENT 15¢ AMERICAN BANKNOTE ISSUE PLATE BLOCK AND A GREAT RARITY IN NEVER HINGED CONDITION, QUITE CERTAINLY ONE, IF NOT THE FINEST KNOWN IN EXISTENCE. $0 (Image)