Gunk, pareidolia, or an RPM

Only one photo of what I see.
Hopefully the photo gives enough details.
This was a ground find.

The secondary D is raised.

Two-part question? do I treat the coin with some MS70?

 

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Looks like a coin with ED and an RPM?? MS70 you say? If you want to blow $16.67 (amazon) on a bottle for this Nickel. go ahead.

 

I already have a bottle. I just don't like using it on damaged coins.

 

Something I figured would be posted by a member here is that the supposed MM does not match the known RPM's on VV and Brians Variety's.

 

Should have a 4th option on the poll.

Image not clear enough to properly examine.

 

Yeah let me see if I can do that.
The patina is just so darn dark. I really can't get enough light on it.

 

Maybe a short acetone soak might help to clarify some of the details?

Very hard to tell, but based on the initial pics, I don't see anything special

 

I soaked in distilled water for about 2 days.
I will try the acetone first. But probably needs some xylene which I don't have at the moment.

 

I threw it in a roll. The acetone didn't do much of anything. On to better coins.