Guam, 1899, $1 black, type I, Paris Exposition Special Printing. Top margin imprint pair, o.g., left stamp barest trace of hinge, right stamp never hinged, centered to the left, deep color, Fine and rare, a unique position pair; with 1974 and 2009 P.F. certificates. Scott No. 12 var.  $4,000. $0 (Image)