"Blue Ikes" are a favorite of collectors. We've rounded up a stockpile of the 40% silver dollars in their original blue U.S. Mint envelopes and are excited to share them with you as a complete set. In this format, the Uncirculated 40% silver dollars were issued specifically for the collector base and only from 1971 to 1974. You will receive four coins as is — these specimens have remained sealed inside their original packaging for nearly 50 years or more, and they may display toning.