Large 22x31” die-cut thin cardboard sign advertises series of four numbered cards reprinting paintings by American artist, Grandma Moses. Issued in 1955. These cards are assumed to have been inserted as pairs that were connected and folded in Post’s cereals. Also issued as a mail premium substitution for adult collectors. Sign features very excited woman holding images of these 4 cards. Sign advertises Post’s 40% Bran Flakes. Scored at left and right with perforated holes for display. Holes are un-punched. Corner tip wear with 15.5” long streak of moisture staining at bottom left corner. Still displays VF.