Eisenhower Dollars, commonly known as "Ike Dollars," were minted by the United States from 1971 to 1978. These coins feature an image of President Dwight D. Eisenhower on the obverse and an eagle landing on the moon on the reverse, commemorating the Apollo 11 mission. The 1973 Eisenhower Dollar is part of a series that includes both copper-nickel and silver specimens, with the latter being more sought after by collectors due to its precious metal content. Collectible varieties also exist, such as proofs and uncirculated editions, which can significantly affect their market value.