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Circulation U.S. coins were never made of pure silver. Up through 1964, dimes, quarters, and halves were made of 90% silver with 10% copper added so the coins would be less prone to wear in daily use. When silver prices rose in 1964, the mint switched to copper-nickel blanks for dimes and quarters beginning in 1965, and reduced the silver in half dollars until 1971 when they too became all copper-nickel.

Bullion coins are often made of 99.9% pure silver, which is about as pure as it's practical to use. These are sold in special holders and are normally marked with the level of purity as a 3-digit decimal; e.g. .999 = 99.9%. These coins are sold for their precious metal content and aren't intended to be spent.

Beyond than that, a jeweler can perform what's called a specific gravity test to tell something about a coin's composition. It involves weighing the coin and comparing the weight to its volume. The density of silver is well-known, so a coin whose density is different from that of silver must have some other metal mixed in, or have no silver at all.

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Q: How can you tell a coin is not pure silver?
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Related questions

Is a pure silver coin an element?

Silver is element number 47 -- Ag. A pure silver coin contains the element silver, but the coin itself is not an element.


Is the 1942 half dollar pure silver?

The coin is considered a solid silver but is not pure silver. 1964 was the last year for the solid silver coin.


What is the value of a .999 pure silver coin worth?

It depends on the weight of your .999 pure silver coin. Currenrtly silver is $24.13 per ounce.


How can you tell if a coin is pure silver if you know the mass and volume of the coin?

I think you would have to be a physicist to do that. It would be easier to identify the coin by nation of origin, date and denomination, and a coin guide book will help do this, and the book will tell you what metal the coin is made from.


Was any current US coin ever made with pure silver?

No. The US has never made a coin with pure silver. The closest to pure silver would be American silver Eagles. These coins are silver bullion coins. They are made of 99.93% silver and .07% copper.


What is a pure silver circulated quarter worth?

The coin is 90% silver and 10% copper not pure silver, but a date is needed.


How much silver in a 1925 us silver dollar?

The coin has .77344oz of pure silver.


When did the US stop making dimes pure silver?

1964 was the last year for a 90% silver dime. No circulating coin was pure silver.


How can you determined that a coin is not pure silive?

Few coins are pure silver, nearly no circulation grade coin is, pure silver is too soft. The only pure silver coins are silver bullion coins, usually dated from the 1980s-present (though a few are older than that). The easiest way for a non-expert to see if a coin is genuine is by looking at the features, comparing weight, thickness, diameter and details of the coin to a genuine example. For example, a Silver Eagle that weighs too little when compared to a genuine coin or is too thick is a giveaway that the coin is suspect. Keep in mind that silver is not magnetic so if the coin sticks to a magnet it is not silver.


Is the 1921 one dollar coin pure silver?

No, nor are ANY U.S. silver coins pure silver. It's 90% silver with 10% copper.


1983 life liberty happiness pure silver silver dollar?

there is no year on the coin


How much silver is in a 1966 silver coin set?

There is only 1 silver coin, the 40% Kennedy half dollar which contains 4.6 grams of pure silver.