It is not plated and most definitely do NOT rub it with steel wool! What you have there is a normal (most likely)uncirculated 1983P quarter. It is in a late die state as evidenced by the orange peel and mushy devices, as are most of the 1983 issues. Clad coins that have spent a long time in a roll will frequently develop that type of golden toning. As Kefiroth mentioned, it is easily a $15-20 coin if uncirculated and even if it was AU58, it would still have decent value. The pictures are a bit fuzzy but I can still see booming luster so that is definitely a nice 1983

It also appears to have a bit of collar clashing in the lower right quadrant of the obverse, I don't really think it would add any value but it should not harm it either.
Edited by biokemist6
07/09/2012 12:27 pm