3.25” with metal back and bar pin held beneath a strip brass. Front has union bug from Chicago on bottom edge. Photo shows Truman with flag in background seated at his famous desk where the buck stopped. Before his folded hands are a pencil and what appears to be a pad of paper. Only the most trivial and normal surface wear shows a trifle in reflected light. Button is in NM condition and displays Mint. Hake #2008 with 2004 guide value of $680.00 although sales are known of in excess of $1,000.