Hey guys found this in a drawer i think it's corrosion but i figured i should ask. also sorry for the bad pictures.
It is a Clad Dime. Clad is made of Cupronickel. The copper mixed with the nickel can tone when exposed to a harsh environment. You can say it toned over time. Not a mint error of any kind unfortunately. If it were struck on a copper planchet intended for a Cent it would be the same size, width and weight of a copper planchet.
Oh.. here are many examples of clad coins and Nickels I have metal detected. They came out of dirt, soil, sand, and brackish water. As I mentioned before, long time exposure to these elements and combined with the weather, seasons, and fertilizer will tone the Cupronickel..
Not copper but it is toned due to copper being in the clad layers. Normal for the conditions it was exposed to.