@jesus111moon, first welcome to CCF. Second, if you accurately weigh this coin, you can determine whether it is environmental toning or the clad layer has been removed. Sorry but in either case, it is worth face value.
"The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz
It looks to me like your dime has environmental damage. Were it missing clad, weight would be less than normal. Dime weight missing one clad layer = 1.863 g +/- 0.091 g; missing two clad layers = 1.453 g +/- .161 g