How Should I Clean This Coin

[nkellam22]

I found this coin during a trip to France. I was super excited when I found it but sadly it is completely toasted. I am looking for a way to remove all the crust off this coin. Normally I hate cleaning coins but when you can't even get an ID I allow it. If I find a way to clean it I will make sure to post the results and hopefully an ID.

Thank You!

 

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[xcopperstax]

It might be too far gone but you could try a toothpick or Andre's pencils... or some electrolysis. It looks pretty thick so one would hope for some details to identify it. Another thing is you could shine a flashlight on it sideways which may reveal some details not seen in the photo.

 

[xcopperstax]

Also you could weigh it and measure the diameter. Compare those numbers to known French coins and you might be able to figure it out. Of course if it's not from France that game could be a bit harder!

 

[SultansOfSwing]

First vote, throw the coin in the freezer for 10 minutes. Then heat up some hydrogen peroxide in the microwave. Drop the freezing coin into the hot peroxide. This will blast some of that crud off as the coin quickly expands. Electrolysis is my 2nd vote. Nothing to lose. Use something low wattage like a cellphone or small electronics charger.

 

[VTColonialDigger]

First vote, throw the coin in the freezer for 10 minutes. Then heat up some hydrogen peroxide in the microwave. Drop the freezing coin into the hot peroxide. This will blast some of that crud off as the coin quickly expands. Electrolysis is my 2nd vote. Nothing to lose. Use something low wattage like a cellphone or small electronics charger.

I agree with SultansOfSwing, this might be a job for peroxide. I've had good results on crusty copper coins. I usually heat the peroxide for 40 seconds in the microwave in a glass jar, and then drop the coin in for a while. Once I feel enough of the corrosion is gone, I'll pull it out.

 

[eyemustdigtreasure]

Like was suggested, try Andre's Pencils or bamboo toothpicks, to flick off the crud.
Chemical bath, whatever scare me - and usually, all I want is to identify the coin,
and date it.