Cover of a Full June 5, 1978 Sports Illustrated Boldly Signed by Al Unser. Lot 247. Cover of a Full June 5, 1978 Sports Illustrated Boldly Signed by Al Unser. He celebrates his third Indianapolis 500 victory. Nm-m 8 signature on an nm issue. Authenticated by Kevin Keating. Winning Bid $20. Back to List Winning Bid $20 Back to List