June 27, 1988 Time Signed by Heavyweight Boxing Champ Mike Tyson. Lot 261. June 27, 1988 Time Signed by Heavyweight Boxing Champ Mike Tyson. No label on this nm-m copy with a large, beautiful 10 of 10 sharpie autograph. Authenticated by Kevin Keating. Winning Bid $138. Back to List Winning Bid $138 Back to List