Removing the Dirt from an 1837 Half Dollar that was buried?

Question

Hi,

I found an 1837 Half Dollar that was buried. At first, I thought it was a large cent because of the color, but after years of being in the ground, this coin has a thick residue of dirt, etc. on it.

I am usually against cleaning coins, but in this case, I am looking to remove the dirt buildup, etc. Anyone know how to do this without harming the coin? I know scrubbing it in any way will damage it further.

Thanks a bunch

Answer 1

Toss it in some sodium bi-sulfate. You can get it at the swimming pool supply. It will cost you about 15 bucks though. I am a silver smith and I use this stuff to clean my silver all of the time. Or you could pick up some Tarn-ex. But be careful with this stuff. It can ruin your prize. Follow the directions carefully. You can find this stuff at the hardware store. Lemon juice might work also. Or, you could take it to a silver smith and let him have a go at it. I doubt that he would even charge you. An ultrasonic sonic cleaner would be the best thing to use. It would remove only the dirt!.

Answer 2

Use dish soap without ammonia in it an warm water. Soak the coin repeatedly as need and use a very soft bristled tooth brush to clean the coin. Rinse it in dry it with a soft clean cloth. Don't polish it an don't clean it any further until you can a reputable numismatist for more extensive advice.

Answer 3

There is a coin cleaner solution you can buy that will take off the gunk but not damage the coin

Answer 4

First, you may want to ask a coin specialist.

I have heard Coca-Cola will clean it.

Hope it helps!