1914, 1¢ green, imperf, booklet pane of six, unused as are all of the reported booklet panes, rich color with huge margins all around, Extremely Fine and choice example of this rare imperforate pane., Although there are reportedly 60 recorded examples of this pane, they are rarely offered., ex-Floyd; with 1982 P.F. certificate. Scott No. 424e  $1,650. THIS IS THE ONLY IMPERFORATE BOOKLET PANE IN U.S. PHILATELY. This unusual error was first discovered in 1968. For background information, see the George Brett article in the March 1969 Issue of The United States Specialist. $0 (Image)

1914, 1¢ green, imperf between and straight edge at top, complete sheet of 100 showing the error pair at top right, showing misperforation from fold-over creating the error; top error stamp with small piece out, o.g., never hinged, Fine appearance; with 1975 P.F. certificate. Scott No. 424f  $13,000. ONE OF ONLY TWO RECORDED EXAMPLES OF THIS ERROR, THIS BEING THE ONLY EXAMPLE IN A COMPLETE PANE. This perforation error was caused when the sheet was accidentally folded at the corner before going through the perforating machine. This caused the double perforations along the top two stamps at right. The other recorded example of this error is contained in a block of nine (ex-Floyd, Whitman). $0 (Image)

1914, 1¢ green, imperf horizontally, vertical strip of three, light natural gum crease at top left, o.g., bottom pair never hinged, small gum crease top left, Fine. Scott No. 424c  $6,000 as one and half pairs. A VERY SCARCE PERFORATION ERROR, PARTICULARLY IN A MULTIPLE LARGER THAN A PAIR. $0 (Image)