These rare bills were (and still are) legal tender in the United States. They feature "Black Diamond", a bison then in the New York Central Park Zoo... or at least some people believe that Black Diamond was the model/inspiration. There is another theory that a preserved bison in the Smithsonian - one actually shot and mounted by William T. Hornaday, was the model. In any event, a great piece of US history.
Variations: Series of 1901 ten dollar bills come with nine different signature combinations: Not all signature combinations available at this time, sorry. This is here just as information for you.
Lyons – Roberts
Lyons – Treat
Vernon – Treat
Vernon – McClung
Napier – McClung
Parker – Burke
Teehee – Burke
Elliott – White
Speelman – White
Vernon – Treat
Vernon – McClung
Napier – McClung
Parker – Burke
Teehee – Burke
Elliott – White
Speelman – White