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Tracking the numismatic value of the most rare US Coins on the market.
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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.  Four Proofs were struck without mintmarks.
1776-1976-D Found in two varieties, with the tail of R in Dollar straight or curved.
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 $50.00 Type II
1973 $11 Better Dates
1973-S $10 Better Dates
1973-D $11 Better Dates
1974-D Rare wrong metal, 40% silver planchets found.






Date/Mint Mark                                 Mintage   PR68   PR69

1971-S 40% Silver                         4,265,234   $126    $138
1973-S copper/nickel clad proof        2,760,339    $29      $64
1974-S copper/nickel clad proof        2,612,568    $79      $89
1776-1976-S Bold rev. letters proof   6,995,180    $16      $69
1776-1976-S Thin rev. letters proof Inc. above     $18      $24
1977-S copper/nickel clad proof        3,251,152    $15      $26
1978-S copper/nickel clad proof        3,127,781    $23      $36



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Eisenhower Dollar Proof Values