The 1913 Type 1 (or variety 1) Buffalo Nickel is the first pereoid of 1913. This design includes the "Standing on a Mound" design on the reverse and the "Indain Head" design on the obverse. This video may also tell you bits and pieses of the 1913 type 1 Buffalo Nickel:
Q. What's all this type 1 and type 2 stuff about? A. They fixed it so vending machines could except it.
Q. What mint was it minted in if it has no mint mark? A. Philadelphia Mint