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Thin Layer on Coin, Cleaning Possible??

Accteam

New member
Hello again,

I didn't want to ask this question in my first post, worried it would be lost. Aside from the other coins found, I have these two coins, with a thin layer of something that looks like black sand/dirt compressed on both side of the coin. About as thick as a nickel coin maybe less.

I tried lightly brushing off, then went to a light scrap off with the toothpick, and nothing happened...I'm not sure if the coin is totally wiped smooth or is the writing under all the crust?

The reason I'm asking this is because, on one coin I became frustrated that nothing was getting it clean so I figured nothing to lose and really dug down to scrap out that crust. After digging out a small area, it kinda looks like there is either lettering or shapes...or is it possible that what I think might be shapes/letters, really is just there from me scrapping so hard on the metal?

Hoping some of the pro's here can help me out with this one. I need your experience with the types of coins you've come across...please.


Thanks and sorry again for all the writing,

Jon
 
How about a photo of one or both of them, that helps in determining what to try.

Working on IDing your first coin, anything at all on the other side. I have seen these posted before and have ID'd it, but I am brain dead this evening. Leaning towards a French copper from the 1700's, not a colonial issued, but a coin of France used in the colonies. .....
Steve is 100% correct in the IDing of the second coin.

Don in SJ
 
I have seen old coppers with a hard crust over the coins detail/design. But sometimes all the detail is contaned in a thin layer of patina that you need to save. The problem is that if you are too aggressive in your cleaning, you might remove the crud and the patina before you know it. You might try warming some hydrogen peroxide up in the microwave and soaking the coin in there. This can remove certain types of dirty crusts. You want keep checking it as it is soaking. Once the crud loosens up sometimes you can remove it with toothbrushes, toothpicks, or your fingernails.
 
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