How do I clean this?

i know I am not supposed to clean coins but... I found this while coin roll hunting and it appears to be in great condition. The only problem is there is black gunk all over it. How do I get it off without damaging the coin? Or should I leave it alone?

 

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Soak in pure acetone and air dry. Repeat as needed. Do not rub with anything abrasive.

 

^^^ Hopefully that should work.

 

What he said.

Great condition for a CRH find!

 

How long do I soak it? It is soft gunk, not corrosion

 

http://www.lincolncentforum.com/for...0-The-First-Steps-to-Proper-Coin-Conservation

 

vinegar soak and pat dry is all I have tried, and only on my buffalo non dated nickel for carving. I would have NGC do it if you had a set going out to them.

 

No vinegar, pure acetone won't hurt the coin but may remove the gunk.

 

thanks @l.cutler I will try Acetone going forward

 

Nice find and I agree with pure acetone, no vinegar. Just be very careful with Acetone and use in a well ventilated area away from any flame or sparks.