State Animal Series, featuring the Oklahoma Mountain Boomer. This coin has been professionally graded by NGC as MS70, indicating a perfect mint state example with no visible imperfections. State Animal Series. State: Oklahoma. Animal: Mountain Boomer. Grade: NGC MS70. Composition: 1 oz. 999 Fine Silver The coin features a full-color design and comes securely encapsulated in an official NGC holder with certification label. Condition: Coin is in excellent condition as graded. Slab is clean and intact. Please review photos for exact item you will receive. Feel free to reach out with any questions. Don’t miss your chance to own a perfect MS70 example from this popular and collectible series.