Iron Tail   ( Oglala Lakota :   Siŋté Máza   in   Standard Lakota Orthography ; c. 1842 – May 29, 1916) was an   Oglala Lakota   Chief and a star performer with   Buffalo Bill 's Wild West. Iron Tail was one of the most famous Native American celebrities of the late 19th and early 20th centuries and a popular subject for professional photographers who circulated his image across the continents. Iron Tail is notable in American history for his distinctive profile on the   Buffalo nickel   or Indian Head nickel of 1913 to 1938.