Reproduction of autographed picture. On photo paper, dimensions: 4x6" (10x15cm).
 
Father (or at least he claims so) of German Blitzkrieg. Pioneer in deployment and development of mobile warefare. First in charge of Army Group, then forcefully on vacation (after fiasco of Barbarossa), then, after Stalingrad, brought back to command whole Eastern Front. 
 
Check also Guderian's postcard and Knight's Cross certificate!