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All silver coins had 10% copper added to make them harder so they would withstand circulation better. Silver was taken out of circulating US Coins in 1965 with the exception of the half-dollar which continued to be minted in 40% silver from 1965 until 1970.

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Q: What year did they start putting copper in all of the coins?
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Related questions

What year did the English mint change from copper coins and pennies?

The last copper coins minted by the Royal Mint were minted in 1860. Since then, "copper" coins have been made from bronze which, depending on the year, has a copper content of anything between 92% and 98% copper. More recently, in 1992, the Royal Mint changed from bronze 1 Penny and 2 Pence coins, to more cost effective copper plated steel coins.


What was the last year that US coins were copper?

No year, because U.S. coins are currently made almost entirely of copper. Nickels are 75% copper; dimes, quarters, and halves are 92% copper; and dollars are 88% copper. The only coin that is NOT mostly copper is the cent, which is 97.5% zinc.


Are coins with 75 percent copper valuable?

Coins with any copper content may or may not be valuable depending on the country of origin, year of minting, denomination, condition and rarity of the coin, not because of the copper content.


Are us pennies made of copper?

U.S. one cent coins were 95% copper until 1982. 1982 was the transition year from copper to zinc, so there are copper coins dated 1982 and zinc coins dated 1982. From 1983 to 2012 the coins are 99.2% zinc & .008% copper with a copper plating.


What year did the US mint start adding copper to coins?

Oh, dude, the US mint started adding copper to coins in 1793. Yeah, like way back when George Washington was probably like, "Hey, let's make our coins a little more blingy with some copper." So, yeah, 1793, when the US was just a baby country trying to figure out its fashion sense in the coin world.


What is the last year that copper pennies were made?

The last copper (actually bronze) U.S. cents were struck in mid-1982. Coins from that year exist in both bronze and copper-plated zinc varieties.


How many pennies were made of copper in 1943 before going to steel that year?

All of them were supposed to be made of steel, however there were a few copper coins accidentally struck that year. Its extremely rare to come across copper pennies from that year.


What was the last year us bronze coins?

The last year of the 95% copper cents was 1982. Midway through 1982 the US mint replaced the 95% copper coins with copper plated zinc cents, so there are some 1982 cents that are copper, others are zinc. However, all Lincoln cents prior to 1982 are 95% copper, and all circulation Lincoln cents dated 1983 and later are copper plated zinc.


What year did the Nazis start to make coins?

The first coins of the Third Reich were minted in 1933, the year that the Nazis seized power.


What was the last year pennies had copper in them?

Lincoln cents still have copper in them, but it's a very small amount only .025 copper & .975 zinc. 1981 is the last year all Lincoln cents were made of mostly copper (.950 & .050 zinc) and then in 1982 the Mint issued Lincoln cents made from both compositions. The copper coins weigh 3.11 grams. The zinc coins weigh 2.5 grams.


What year was the metal changed that they used to make 1 and 2 pence coins?

British copper plated steel 1 and 2 Pence coins were introduced in 1992.


When did the silver content in us coins get smaller?

1837 was the year US silver coins changed to .900 silver & .100 copper, that caused a slight reduction of silver.