Coins minted for circulation were made from "coin silver", the 90% silver / 10% copper alloy mentioned in your question. Some very early issues had slightly less silver, 89% or 89.5% but here were no other deviations from that ratio. Anything with a higher percentage of silver in it was deemed too soft to stand up to normal wear.
Of course the current "eagle" bullion coins are 999/1000 fine, but they're not intended for spending.
The coin is not worth more than 50 cents. None of the business strike Kennedy half dollars contain any silver from 1971 to date. Only Proof and collectors coins sold from the US Mint are worth more.
Let x = coins that Jimmy hasx + 7 = coins that Tom hasx + (x + 7) = 712x + 7 = 712x = 64x = 32 coins for JimmyTom has 39 coins
All true silver dollars (the large coins made from 1794 to 1935) are worth much more than face value, if only because of their silver content. As of 07/2010 even the most common ones are worth about $15 for the metal in them. However, many are worth significantly more to a collector but you have to know the coins' dates, mint marks, and conditions to be sure.
Only nickels made between mid 1942 till 1945 contain silver. Currently the silver value is around $1.75 to $2.
HI IN Simple terms, 99.9% (just like some coins), of the time, a PROOF coin will normally be worth MORE than a MS70 of the same year. The exception can be if you have an MS70 (or 69) coin that has no proof coins for that year, and so, is extremely rare just by itself. PROOF coins are usually worth more, because they are untouched by human hands. An MS 65 or better coin, could be a coin that is culled from uncirculated coins, but has one really slight flaw.
Quarters minted after 1965 do not contain silver. Only pre-1965 were struck with a certain percent of sliver.
In general circulation US coins, the 90% silver coins were last made in 1964. Some proof sets made later contain more silver than the general circulating coins. The Peace dollars made 1921-1935 were the last 90% silvers, some Eisenhower dollars made 71-76 were 40% silver.
None of the bicentennial Eisenhower dollar coins made for general circulation contain any silver or are worth more than face value. Only Proof and collectors coins sold from the US Mint are worth more. The special collectors coins are only 40% silver not pure silver.
None of the Bicentennial Eisenhower dollar coins made for general circulation contain any silver or are worth more than face value. People call them "Silver Dollars" just because of the size of the coins. Only Proof and collectors coins sold from the U.S. Mint are worth more.
None of the Eisenhower bicentennial coins made for general circulation contain any silver or are worth more than face value. Only Proof and collectors coins sold from the US Mint are worth more.
None of the bicentennial Eisenhower dollar coins made for general circulation contain any silver or are worth more than face value. Only Proof and collectors coins sold from the US Mint are worth more.
None of the bicentennial Eisenhower dollar coins made for general circulation contain any silver or are worth more than face value. Only Proof and collectors coins sold from the US Mint are worth more.
6-27-11>>> None of the Bicentennial half dollar coins made for general circulation contain any silver or are worth more than face value. Only Proof and collectors coins sold from the US Mint are worth more.
None of the Bicentennial Eisenhower dollar coins made for general circulation contain any silver or are worth more than face value. People call them "Silver Dollars" just because of the size of the coins. Only Proof and collectors coins sold from the US Mint are worth more.
All US quarters minted from 1873-1964 contain the same amount of silver. And all silver proof quarters (1992-present) contain the same amount of silver (keep in mind that coins you find in your pocket change made from 1965-present contain no silver) there was a special silver bicentennial quarter made that only contained 40% silver (keep in mind that the bicentennial quarters you find in change contain no silver) but other than that the silver level has remained constant for all silver quarters. The quarters before 1873 contained different levels of silver, but such coins are collectable and worth more than melt value.
U.S. dimes, quarters, and half dollars minted before 1965 are generally 90% silver. Morgan dollars and Peace dollars are also 90% silver, and half-dollars minted between 1965-1970 are 40% silver. For more comprehensive information, try the coin calculators at coinflation.com.
Pre-1965 silver coins are worth more for the silver than face value.