CSA 7-R, 5¢ dark blue PANE OF 100 (lower left) on thicker LOCAL PAPER showing FILLED IN FRAMES on full right column (gutter column) of stamps. Richmond paper is easily twice as rare as London paper, if not more, especially in large multiples. Full original gum, mostly never hinged, tear in left margin only which is supported by archival tape, pin holes in right margin, minimal creasing for its size. Catalog value well exceeds $4,000 just as singles, much more as blocks, and roughly double premium for never hinged not taken into account. VERY RARE MULTIPLE. $4,000.