SPECIFICATIONS:
The proof Eisenhower Dollars came in brown box as proofs, the 40% silver Ikes came in blue envelopes, and the clad proof Eisenhower Dollars came in proof sets. The 40% silver Eisenhower dollars came in a three coin set, proof and business strikes with a silver Kennedy half dollar and Washington quarter.
Designer: Frank Gasparro, the reverse based on a design by Michael Collins and James Cooper
Diameter: 38.5 millimeters
Metal Content:
Outer layers - 75% Copper, 25% Nickel
Center - 100% Copper
Weight: 350 grains (22.7 grams)
Edge: Reeded
Mint mark: None (for Philadelphia, PA) between Eisenhower's head and the date.
1971-S 40% Silver
1972-S 40% Silver
1973-S 40% Silver
1974-S 40% Silver
BICENTENNIAL REVERSE (1975-1976)
1776-1976-S Proof only 40% Silver
Designer: Obverse by Frank Gasparro; Reverse by Dennis R. Williams
Diameter: 38.5 millimeters
Metal Content:
Outer layers - 80% Silver, 20% Other
Center - 79% Copper, 21% Nickel
Weight: 380 grains (24.6 grams)
Edge: Reeded
Mint mark: Is between Eisenhower's head and the date.
Cherry Picker's List:
1974-D Rare off-metal errors exist on 40% Silver planchets.
1776-1976 Found in two varieties, with the tail of R in Dollar straight or curved.
1776-1976-D Found in two varieties, with the tail of R in Dollar straight or curved.
1776-1976-P-D Have a Type 2 Thin Letter Reverse
1776-1976-S 40% silver Found in two varieties, with the tail of R in Dollar straight or curved. Struck only as Proofs and available originally only in Proof Sets.
1977-D Rare off-metal errors exist on 40% Silver planchets.
1971 $10 Better Dates
1972 High Relief Earth Type II
1972 Type 3 Earth Reverse
1973 Better Dates
1973-S Better Dates
1973-D Better Dates
1974-D Rare wrong metal, 40% silver planchets found.