$5 Silver Certificate. Sioux Chief One Papa ("onay papa") is the only Native American to appear on a U.S. banknote. His portrait also makes this silver certificate a very classic (and classy) example of American currency. Obverse image printed on the back. When printed on a mug, only the front of the bill is printed, but it wraps around the mug from one side of the handle to the other. It looks fantastic!