10 cents.
Please look at your pocket change. ALL American dimes dated 1965 and later are made of a copper-nickel "sandwich" with a pure copper center, so they all have copper reeding around the edge where the core is visible.
10¢. The reeding either wore off or was rubbed off.
10¢. The coin is 40 years old and the reeding has worn off.
If it has been copper plated, it's still just a dime.
A U.S. dime has 118 ridges, also known as reeding, around its edge. These ridges are designed to prevent coin shaving and counterfeiting. The reeding also helps distinguish the dime from other coins with a smooth edge.
The value of a 2006 copper dime varies depending on its condition. In some cases this dime is worth about $0.15 and might be valued at up to about $1.
The ridges around the edge of a dime is called reeding or milling. There are 118 ridges.
First weigh it ... a normal dime weighs 20268g. Then have a coin dealer check it out if different.
This year is still in circulation and is only face value.
If it's so worn that the date isn't visible, it's worth its metal value only - about 80¢ if it's an older silver dime, 10¢ if it's a modern copper-nickel dime.
You have a Roosevelt copper-nickel clad Dime. A 1976-S coin in proof condition (PF63) is worth: $2.00.
Dimes minted for circulation haven't contained any silver since 1964. All later dimes are made of copper-nickel and are only worth 10 cents each. If your dime has the familiar copper band on its edge you have an ordinary dime. The only silver dimes minted since that time are "Prestige Proof" coins that are specially struck for sale to collectors. If your dime doesn't have the copper band but does have an "S" mint mark and is heavier than an ordinary 2005 dime, you could have a proof dime that was removed from its package. Unfortunately if it has any wear on it, its value is reduced to the melt value of about 0.07 times the price of 1 oz of silver.
No Copper-nickel clad Copper 1 Dime "Roosevelt Dime" 1965-2017 1946-1964 Silver (.900)