The 70D is rdv-002. This is a proof reverse. Not really worth a premium. But still neat. http://varietyvista.com/07 Roosevelt Dimes/Reverse Design Varieties.htm
So the acetone on these would improve or remove should I say staining and leave anything else as is.. yep!
I know it states that it’s pretty common for this MAD 1985-P. Looks a little different. Again, to me anyway lol.