In 2011 the United States Mint released a very Limited Issue Buffalo $50 Fifty Dollar Gold Proof Coin struck in solid fine .9999 Gold weighing one ounce of pure Gold Certified Slabbed and Graded by PCGS as PR70 DCAM.
The reverse depicts a native American and the obverse features an American Buffalo also called a Bison.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.