The 1918 Buffalo Nickel was minted at the Philadelphia mint and had a total mintage of 32,086,314 coins. The coin had a diameter of 21mm, a weight of 5 grams, and was composed of 75% copper and 25% nickel. The Buffalo Nickel series was minted first in 1913 and until 1938, a 25 year span. Over its history the Buffalo Nickel a a few different varieties, however no major design changes were ever made. Each Buffalo Nickel featured a plain edge, not the typical reeded edge that is used on many U.S. coins.
The Buffalo Nickel was originally designed by mint engraver James Earl Fraser. His inspiration for the obverse design was a combination of Native American tribal members and it featured a Native American right facing. The reverse of the coin was a standing bison, which was inspired by "Black Diamond", a bison whose home was the Central Park Zoo in New York City.
The mint mark on a Buffalo Nickel can be found below the words "five cents" on the reverse of the coin. While coins such as this one don't feature a mint mark because it is struck at Philadelphia, others such as San Fransisco or Denver minted coins can be seen below "five cents". Many collectors have trouble seeing the mint mark because it is very small. To help, collectors often purchase a loop to magnify details of the coin such as the mint mark.