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Um... it is impossible for it to be all silver. The vast majority of Bicentennial quarters are copper-nickel and worth only 25 cents. Some Bicentennial quarters with an "S" mintmark are 40% silver. If you found a Bicentennial quarter in your pocket change chances are it isn't silver. Unless it is in mint packaging saying it is silver, it is most likely not silver.
None of the bicentennial Kennedy halves made for general circulation have any silver or are worth more than face value. The 40% silver collectors coins all have the "S" mintmark and were issued only in the 3-piece Silver Bicentennial sets sold from the U.S. Mint. The 40% silver coins have a weight of 11.50 grams.
For 1971 & 1972 only, all S mint marked coins are 40% silver. From 1973 to 1976 the S mint marked coins in the standard proof sets are clad coins, the 40% silver Ike's were sold separately but they were included in the bicentennial 3-piece silver sets. No silver Ike's were struck in 1977 or 1978.
No circulated bicentennial dollars are rare. If it's a silver proof, it will weigh more than a regular Eisenhower dollar, and it will have the mint mark S.
1964 was the last year for general circulation 90% silver quarters. 40% silver quarters were struck for collectors for a special silver bicentennial set, and bear the date 1776-1976, keep in mind nearly all Bicentennial quarters are not silver. If you find it in circulation, it is not silver. All silver Bicentennial quarters have the "S" mintmark (though not all "S" mintmark bicentennial quarters are silver) if your Bicentennial quarter has no mintmark or a "D" mintmark, it is 100% certain it is not silver and is only worth 25 cents. Silver proof sets have been on sale from 1992 to present and are struck in 90% silver. Keep in mind that only the silver proof sets are struck in silver, normal proof sets are copper-nickel clad like circulation issues.
1965, 1966, 1967, 1968, 1969, 1970 all issues. And there was a 1976 S bicentennial 40% silver coin released in special silver bicentennial sets, but no 1976 coins released for general circulation contain any silver.
Most coins are not silver, unless your coin has an "S" mintmark, it is copper and nickel and only worth $1.
Yes, bicentennial dollars are worth more than face value if they are in uncirculated condition or are part of a collector's set. However, circulated bicentennial dollars are typically valued at face value or slightly above due to their common circulation in the 1970s.
This may get a little confusing: For 1971 & 1972 all the "S" mintmarked coins are 40% silver and were struck as Proof and Uncirculated. From 1973 to 1976 the Mint issued a Copper-Nickel "S" mintmarked Proof coin along with the 40% silver issues. No silver coins were issued in 1977 & 1978.
All circulation half dollars dated 1971 and later are made of copper-nickel and are only worth 50 cents. Some Bicentennial (1776-1976) halves were struck in 40% silver and sold in special collectors' sets. These are worth about $3 to $4 depending on the price of silver.
1974-1978 are Eisenhower dollars. The 1979-1980 are Susan B. Anthony dollars. None of the coins are worth more than face value UNLESS they are proof or high grade Mint State coins. The SBA coins were never struck in silver, some of the "Ike's" were struck in 40% silver in 1974 and for the bicentennial (1776-1976) but these coins have "S" mintmarks and were never released into circulation.
The address of the Palmyra Bicentennial Public Library is: 212 S Main St, Palmyra, 63461 1650