Collectible coins are numismatic items valued for their rarity, historical significance, and condition. In the United States, one notable type is the Morgan Dollar, which was minted between 1878 and 1904, and again in 1921. The 1880 Morgan Dollar, particularly those minted at the Carson City Mint, is sought after by collectors due to its limited mintage and appeal among enthusiasts. The "Three Dollars" designation specifically relates to different coin types issued, such as the three-dollar gold piece, which are also collectible within numismatic circles.