Only 2 countries call their 10¢ coins "dimes", the US and Canada.
US dimes were made of 90% silver and 10% copper up till 1965. Starting with that date, all circulating dimes are now made of a 3-layer sandwich consisting of a pure copper core with outer cladding of 25% nickel and 75% copper, for an overall copper content of about 92% copper.
Canadian dimes have been made of various materials over the years, beginning with sterling silver (92.5% silver, 7.5% copper), then 80% silver/20% copper, 50% each, pure nickel, and since 2000, plated steel.
Any dimes minted before 1965 contain 90% silver and are at least worth the metal content.
The metal content of a 1980 silver dollar is 90% silver and 10% copper. That compisition is the same for all dimes, quarters and dollar coins up till 1964 when the compistion changed again to 90% copper and 10& nickel.
Dimes were struck in 90% silver until 1964. Assuming it's in circulated condition your coin is basically worth its metal content, about 80 cents.
All pre-1965 US quarters and dimes are 90% silver.
I'm assuming the rest of the question is about the metal content. Nickels before 1964 have the same makeup as those made after '64. It was dimes, quarters, and halves that changed in 1965.
No. Except for 1942-1945, nickels have always had the same metal content. It was dimes, quarters, and half dollars that switched in 1965.
US dimes minted before 1965 are currently worth at least $2 for their silver content.
Unless the dime was in exceptional, mint-state condition, or a proof it would only be worth 10 cents. 1986 dimes are incredibly common and can be found in pocket change daily and are struck on the same blanks that current dimes are stuck on so there is no precious metal content in there.
US dimes are made from 90% silver 10% copper in those years.
Yes, all Mercury dimes are struck in 90% silver and are worth about $2 for their silver content regardless of condition.
copper is a type of metal and no dimes and money are not made of copper
All dimes from 1960 to 1970 are worth at least 10 cents. Dimes from 1960 to 1964 are worth at least $2 for there silver content. Dimes dated 1965 to 1970 are only worth face value unless they are uncirculated.