The Silver Buffalo is a legal tender Silver bullion coin designed after James Earle Fraser's renowned Indian Head and Buffalo Nickel series. The Silver Buffalos' reverse design features an American buffalo, which is modeled after Black Diamond – the New York Central Park Zoo's resident buffalo in the early 20th century. This image was originally sketched by James Earle Fraser while visiting the zoo, and the sketch later served as the basis for Fraser's final design. James Earle Fraser's Indian Head Nickel design is regarded among the best designs of any U.S. coin. This round boasts the famous design with a listed .999 purity. The Silver round is among one of the most popular ways to invest in Silver.