Cliff Hagan Signed Letter Describing What His Hall of Fame Induction Means to Him. Lot 284. Cliff Hagan Signed Letter Describing What His Hall of Fame Induction Means to Him. Hagan’s 10-season career with the St. Louis Hawks earned him a place in the Hall of Fame in 1978. Kevin Keating authenticated his gem mint 10 signature, which is at the end of his handwritten letter. Winning Bid $40. Back to List Winning Bid $40 Back to List