With the exception of 1964, all Proof Kennedy half dollars will have a "S" mintmark. They also have a mirror like finish on them.
Grading a Proof coin can be a challenge but it still deals with contact marks, scratches, blemishes, hairlines, luster and eye appeal. Proof grading standards are available on-line and in print.
You can tell a coin is silver by either looking at the edge and finding it a uniform silver color (with no darker colors) or by finding a dime, quarter, half dollar or dollar with a date from before 1965. They now make silver versions of the dime, quarter and half, but only in proof sets.
Well, you have got to tell what is in the proof set. Say that it was a nickel, dime,half dollar, and silver dollar, I'd say about $15, but $14 dollars of it from the silver dollar...~Kyle Michel~Very Experienced Coin Collector~VERY INCORRECT1977 Proof Sets were only issued in cupro-nickel clad composition. They don't contain any precious-metal coins. As of 01/2015 retail prices are in the $9 to $10 range.
If there is no mint mark it's an uncirculated set, not a proof. All proof sets were minted in San Francisco and there are no reports of any coins being struck without mint marks (see the famous 1982 plain dime, for example). If the dollar is a Type I (thick letters on the reverse) the set might be worth about $5. If it's a Type II (thin letters) it would be worth around $3.
If its from the 170000 ! Iguess.
half dollar kenedy
The dates are on the obverse (front) of the coins.
Grading a Proof coin can be a challenge but it still deals with contact marks, scratches, blemishes, hairlines, luster and eye appeal. Proof grading standards are available on-line and in print.
You can tell a coin is silver by either looking at the edge and finding it a uniform silver color (with no darker colors) or by finding a dime, quarter, half dollar or dollar with a date from before 1965. They now make silver versions of the dime, quarter and half, but only in proof sets.
Well, you have got to tell what is in the proof set. Say that it was a nickel, dime,half dollar, and silver dollar, I'd say about $15, but $14 dollars of it from the silver dollar...~Kyle Michel~Very Experienced Coin Collector~VERY INCORRECT1977 Proof Sets were only issued in cupro-nickel clad composition. They don't contain any precious-metal coins. As of 01/2015 retail prices are in the $9 to $10 range.
No, the last time silver was in a Kennedy half dollar was 1970 when it was 40% silver. No 1971 or 1972 half dollars contain any silver. The US mint wouldn't make silver proof sets until 1992. So there are a few reasons why your 1972 half seems to be silver, the most common reason is plating, I've seen many Kennedy halves, gold, silver and even chrome plated. The other possibility is an error where the coin was struck on an incorrect blank, but there are very few errors of that type. Without seeing your coin I can't tell you for certain why your coin seems to be silver, but the US mint didn't make silver halves in 1972.
If there is no mint mark it's an uncirculated set, not a proof. All proof sets were minted in San Francisco and there are no reports of any coins being struck without mint marks (see the famous 1982 plain dime, for example). If the dollar is a Type I (thick letters on the reverse) the set might be worth about $5. If it's a Type II (thin letters) it would be worth around $3.
By its date: 1964 halves were made from an alloy of 90% silver and 10% copper. 1965-69 coins are technically clad coins, but were made with outer layers of 80% silver and an inner core of 20% silver that resulted in an overall composition of 40% silver, 60% copper. 1970 halves were only released in collectors' sets 1971 and later halves made for circulation and most proof sets are copper-nickel clad. The ones sold in special "Presitige" sets are 90% silver but they do not circulate.
The best thing to do is take it to a coin dealer for a accurate assessment.
The easy way is by the dates. Halves made in 1964 or before are 90% silver and 10% copper. Kennedy halves from 1965 to 1970 are only 40% silver. All regular issue halves from 1971 to date are copper-nickel.
The US half dollar minted since 1964 has John Kennedy's portrait. Those minted in 1964 are 90% pure silver. Those from 1965 to 1970 are 40% silver. All minted after 1970 (except those included in silver proof sets) are copper-nickel and contain no silver. US Mint "Prestige" proof sets include 90% silver Kennedy Halves, although all others versions of the coin including standard proofs are made of copper-nickel.
Not being certain which half dollar you have, I can tell you that there was never an "A" or a "N" mint mark. The letters you should find will be a "D", an "S", an "O", a "P" or a "CC"