496 var, 1989 10.40k on 1.95K Bush-shrike, "K10.40" surcharge instead of "K15.00", top left corner margin block of four, margin notation of original value deleted and new value of "K520" added, NH, very fine and rare with just one sheet of 50 recorded, accompanied by a top left corner margin block of the normal K15 on K1.95 (SG 591a)