Cardstock insert for the Blue Dunlop Golf Balls   dated 1931.  approx, 2" x 4"  No bends or folds, but there is a slight curvature.  This likely was an insert to a dozen or half dozen box of these golf balls.  This type of golf ball advertising does not surface very often, and not in this condition if it does.  Guaranteed as described, refunds less all shipping.  This will be sent with cardboard on both sides via USPS 1st Class Ins.   I will ship outside the U.S. with cardboard on both sides in a poly bag via Ebay International + $1.00.    No combined shipping without seller's approval.  Please email any questions.