CSA 7-R-v2, 5¢ dark blue THICK LOCAL PAPER left upper corner block of 4 (positions 1-2/11-12) with two FILLED IN FRAMES at left as well as ANOMOLY INK of different composition from the norm, per Dr. Harry Brittain, bit of age staining and natural gum creasing, original gum, never hinged, Very Fine; thick paper alone cats $200 in Scott as singles as well as listed variety and unusual ink. $250.