Greetings, I am a young numismatist.  The buffalo nickel is a widely collected coin.  Some of the key dates are 1912s, 1913s variety 2, 1915s, 1921s so on.  The designer was James  Earle Fraser.  James used three different models of Indians to create this.  There were three mints producing this coin the Philadelphia mint, Denver mint and the San Francisco mint.