In 1970, Congress passed legislation authorizing a new one dollar coin to commemorate both the death of General Dwight David Eisenhower and man's first landing on the moon (on July 20, 1969). The obverse features a bust of Eisenhower facing left; the reverse copies the insignia of the Apollo 11 mission, minus the name of the mission. "Ike" dollars made for circulation were of a cupro-nickel composition. Special Uncirculated and Proof versions containing 40% silver were struck and sold at a premium to collectors. A new design was created to celebrate the 1976 Bicentennial of the signing of the Declaration of Independence.