Baseball Autographed by Negro League Players Henry Bird Clark, Art Hamilton. Lot 449. Baseball Autographed by Negro League Players Henry Bird Clark, Art Hamilton. Clark’s signature is an 8-9, and Hamilton’s, a 7, on the side panel of a nm-m baseball. Clark played for the Kansas City Monarchs 1955-59. Authenticated by Kevin Keating. Winning Bid $17. Back to List Winning Bid $17 Back to List