1.25". Don't confuse this button w/its re-pin counterparts produced from original papers in the 1940s, this example is an original w/correct collet and retaining original "Baltimore Badge Co." back paper. This exceptional design features TR's portrait in a large drum carried by a marching elephant. Light even age toning of cream paper and moderate surface wear in reflected light. Exc. Opportunities to acquire true originals of this design are rare and w/only a few original specimens known in any condition this is a special opportunity to obtain a cornerstone TR button. Bob Westerman Collection.