The coin you describe is referred to as an " Indian Head Nickel " or sometimes a " Buffalo Nickel ".
"Tatanka" is a Lakota Indian word that means buffalo.
Buffalo or Indian Head nickels were minted in the US from 1913 to 1938.
Your mom is a buffalo.
The buffalo is the back. The front is an Indian head.
A big Indian and a little Indian are walking down the street... The big Indian is the little Indian's father but the little Indian is NOT the big Indian's son. How can this be? ANSWER: It is the big Indian's DAUGHTER.
No year. The Indian head / buffalo design was used on nickels minted from 1913 to 1938.
The buffalo (actually a bison) is on the back, with an Indian head on the front. The date is on the front at the base of the Indian's neck.
The first Indian Head/Buffalo Nickel was minted in Philadephia in the year 1913. The coin is actually called a buffalo nickel or an Indian head nickel, but not "buffalo head". After all, it shows the entire buffalo, not just its head :)
Migration in search of the buffalo
Buffalo
buffalo