The National Collector’s Mint 2007 Silver Buffalo 2 Coin Proof Set includes two coins made of 0.999 fineness silver. These coins were minted in the United States in the year 2007, with a striking proof finish. Each coin is 1 ounce. This set is ideal for collectors looking to add high-quality silver coins to their collection, showcasing the craftsmanship and design of American coinage.