Since more coin collectors are starting to collect this series, this increased collector interest has led to the discovery of multiple die varieties and errors. However, not all of them will be listed in standard coin catalogs and value guides. Instead, the editors of these guides usually wait until collector interest in a particular die variety or error rises to the level of attention that conventional collectors would want to know the value. Additionally, editors of coin value guides need to have an adequate volume of sales history to publish a value. One of the most valuable Eisenhower dollars is the 1972 Type 2. This is easily identifiable by looking at the image of the moon on the reverse. You can study these popular Eisenhower dollar varieties and errors to add them to your collection. Since the production run of this variety ran for nine months, it is the most common of the three varieties. Therefore, it carries very little numismatic premium. Since the mint used only one coin die in producing this variety, it is estimated that the number of coins produced is under 100,000. Therefore, this is the most sought-after die variety in the Eisenhower Dollar series. The United States Mint began producing these Type 2 coins in early 1976. Since both Type 1 and Type 2 coins were produced for an entire year, neither variety carries a numismatic premium. Uncirculated coins can be purchased for around five dollars from your favorite coin dealer.