What eisenhower silver dollars are 40 percent silver?
Some Eisenhower Dollars were struck in 40% silver to be sold to
collectors. All of these coins were minted at the San Francisco
Mint, with dates 1971, 1972, 1973, 1974, and 1976. These coins were
either uncirculated or proof. Uncirculated coins came in cellophane
with a blue plastic token in a blue envelope. Proof issues came in
a proof set-like plastic case, contained in a brown "wood grain
finish" box with a gold seal on the back. The uncirculated coins
are referred to as 'Blue Ike's' and the proofs as 'Brown Ike's.
From 1973 to 1977 are the only years that the coins were included
in the standard proof and uncirculated coin sets sold from the
Mint, but these coins are NOT 40% silver. Special Bicentennial coin
sets did have 40% silver coins.