Having had an interest in coins since I was able to grasp the concept of the value of metals I have taken to asking the local bank for any "rare" coins half dollars and the like, and I do believe I have finally found something worth asking about, 8 Eisenhower dollars, 3 bi-centennial, 3 72's and a 74 and a 71, I am honestly not sure where to find the mint marks however one of the 72 has a heavy green patina (although it could just be dirt there seems to be a bit of what appears to be green crayon stuck to it...) The rest are in very good condition almost uncirculated in appearance...
Hello, John --
The mintmarks for your Eisenhower dollars would be found under Eisenhower's bust over the right side of the date; that is, if there is any mintmark to be found. Philadelphia-minted Eisenhower dollars did not contain a mintmark. The "Denver" mintmark is a "D" and an "S" mintmark indicates San Francisco.
If your coins have no mintmark (Philadelphia) or a "D" (Denver), they are made from copper-nickel clad and are worth approximately $1.05 to $1.15 if worn. Many "S"-mintmark dollars (San Francisco) are made from a 40% silver composition and their values can be found here:
1971 - https://coinvalues.com/eisenhower-dollar/1971
1972 - https://coinvalues.com/eisenhower-dollar/1972
1973 - https://coinvalues.com/eisenhower-dollar/1973
1974 - https://coinvalues.com/eisenhower-dollar/1974
1976 - https://coinvalues.com/eisenhower-dollar/1976
The only way to tell whether or not an S-mint Ike dollar is made from silver is to weigh the coin; if it's 24.59 grams, it's made from silver; copper-nickel clad pieces come in at 22.68 grams.
The green patina is unfortunately not a desirable thing; it's a sign of PVC corrosion caused by being stored in a plastic holder that contains polyvinylchloride, a substance known to cause damage to coins. I suggest keeping this coin away from any others you have.
I hope this info is helpful to you!
Josh @ CoinValues
The mintmarks for your Eisenhower dollars would be found under Eisenhower's bust over the right side of the date; that is, if there is any mintmark to be found. Philadelphia-minted Eisenhower dollars did not contain a mintmark. The "Denver" mintmark is a "D" and an "S" mintmark indicates San Francisco.
If your coins have no mintmark (Philadelphia) or a "D" (Denver), they are made from copper-nickel clad and are worth approximately $1.05 to $1.15 if worn. Many "S"-mintmark dollars (San Francisco) are made from a 40% silver composition and their values can be found here:
1971 - https://coinvalues.com/eisenhower-dollar/1971
1972 - https://coinvalues.com/eisenhower-dollar/1972
1973 - https://coinvalues.com/eisenhower-dollar/1973
1974 - https://coinvalues.com/eisenhower-dollar/1974
1976 - https://coinvalues.com/eisenhower-dollar/1976
The only way to tell whether or not an S-mint Ike dollar is made from silver is to weigh the coin; if it's 24.59 grams, it's made from silver; copper-nickel clad pieces come in at 22.68 grams.
The green patina is unfortunately not a desirable thing; it's a sign of PVC corrosion caused by being stored in a plastic holder that contains polyvinylchloride, a substance known to cause damage to coins. I suggest keeping this coin away from any others you have.
I hope this info is helpful to you!
Josh @ CoinValues
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