Any advice on getting this black off this token safely?

[Truth]

I bought this Andrew Jackson took in for two dollars and I’m looking for a way to maybe clean it up.What do you guys think about that black crud?

 

Amazon Forum Fav 👍

Cry Of The Eagle: History And Legends Of The Cherokee Indians And Their Buried Treasure - Grab it through Amazon!

[Professor of Engineering]

You could try electrolysis in small sessions and review progress. I've used this method in the past with mixed results.

Good Luck with the restoration.