Often nicknamed the "Brown Ike" because it used to come in a brown box. The coin features President Dwight D. Eisenhower on the obverse and an eagle landing on the moon on the reverse. Composed of 40% silver and a GEM Proof Finish, achieved by striking the coin twice at the mint with special dyes for collectors. Fewer than 7 million of the proof silver dollars were released in 1971. $25