All the 1964 peace dollars were melted. My guess is you have a 50 cent piece half dollar. Which has 90% silver content also all per 1964 coins were also 90% silver
Most coins intended for circulation are not pure silver. While recently there are coins such as the American Silver Eagle which are pure silver, silver has not been in any American circulating coin since 1970 when the 40% silver alloy was removed from the half dollar, pre-1964 Quarters, Dimes and Half-Dollars contain 90% silver with 10% copper. Silver is a very soft metal and would not hold up to daily wear and tear of everyday transactions so it needs to be mixed with a harder metal for it to be resistant to wear and tear.
Beginning in1965, dimes were made without silver. Up to 1964, dimes were made of 90% silver. The nominal weight was 2.5 gm so 0.90 * 2.5 gm = 2.25 gm of pure silver.
None. Please don't assume that all pre-1965 coins contained silver. Except during WWII, US nickels never contained silver - they've always been 75% copper alloyed with 25% nickel. From 1942 to 1945 special "war nickels" were made that contained about a gram of silver, because nickel was needed for the war effort. A 1964 U.S. nickel contains 0% silver. Only nickels issued from 1942 thru 1945 (known collectively as 'war nickels' and distinguished by their large mint marks, hovering over Monticello on the reverse) contained any silver, 35% by weight.
Except for special "war nickels" minted from late 1942 to 1945, all US nickels are made of an alloy of 25% nickel and 75% copper.War nickels were made of an alloy of 56% copper, 35% silver, and 9% manganese because nickel metal was needed for the war effort. They can be identified by a large mint mark letter (P, D, or S) over the dome of Monticello on the back.MoreNo circulating US coins have ever been made of pure silver. It's too soft and the coins would wear out very quickly.If you think about it for a few seconds, nickels are twice the size of dimes which were made of silver. If nickels had been made with a similar percentage of silver they would have been worth 20 cents, not 5 cents.
"18K pre-met" likely indicates that the ring is made of 18 karat gold that is pre-metered or pre-measured for quality control purposes. It suggests that the gold in the ring is 75% pure gold, with the remaining alloy metals making up the remaining 25%.
The coins have an Actual Silver Weight (ASW) of .36169oz of pure silver.
U.S. quarters dated 1964 or earlier are 90% silver and 10% copper, they contain .18084oz of pure silver.
The last year before 1964 that silver dollars were minted was 1935, and they were 90% silver. The melt value at present is about $24.
5-5-11>> If you mean a real silver dollar made in 1935 or BEFORE, as of today they are worth $29.00 just for the silver.
Pre-1965 dimes are 90% silver & 10% copper. The Actual Silver Weight (ASW) is .07234oz of pure silver.
A 1964 Roosevelt Dime has .07234oz of pure silver. as do all pre-1965 Roosevelt dimes regardless of date or mint mark. Those dated 1965 and later are made of copper-nickel.
U.S. quarters dated 1964 or earlier contain .18084oz of silver.
US halves were never made of pure silver, all pre-1965 (1964 was the last) coins are 90% silver and 10% copper. From 1965 to 1970 they were made of 40% silver and 60% copper. From 1971 to the present they are 75% copper and 25% nickel bonded to an inner core of pure copper.
Most coins intended for circulation are not pure silver. While recently there are coins such as the American Silver Eagle which are pure silver, silver has not been in any American circulating coin since 1970 when the 40% silver alloy was removed from the half dollar, pre-1964 Quarters, Dimes and Half-Dollars contain 90% silver with 10% copper. Silver is a very soft metal and would not hold up to daily wear and tear of everyday transactions so it needs to be mixed with a harder metal for it to be resistant to wear and tear.
1964 JFKs, Franklin, Walking Liberty, and Barber halves all weighed 12.5 gm when new and were made of an alloy of 90% silver / 10% copper. That means they contained 0.90 x 12.5 = 11.25 gm of pure silver.Halves dated 1965-1969 are 40% silver, and circulation halves dated 1971 or later have no silver at all, just copper and nickel.
First you must give more detail. Please include date, condition, and mintmark if there is one. After you post a new question I can answer this question.
90%, or 2.25 grams.