1906 Real Photo Postcard of the Chicago White Sox 1906 World Series Champions. It has been authenticated and encapsulated by SGC as Authentic. The postcard is postally used and is postmarked October 14, 1906, which is the date of the clinching world Series game. It features (23) members of the White Sox including: Charles Comiskey, Fielder Jones, Ed Walsh, Frank Owen, Nick Altrock, Frank Isbell, Billy Sullivan, Jiggs Donohue, George Davis, and Ed Hahn. The postcard has been trimmed along all of its edges.