cleaning large cents

[Waterdog]

I went out and found a large cent today and wanted to find a way to clean it. any ideas ?

 

[Coin Rescue Inc]

Some of the older coins I find have a layer of what I think is Calcium or some mineral. Soil around here is clay. If I go 20 miles away there is more sand.

The deposit on the coin actually hides the date.

I find if I take a suitable glass container and pout in a few ounces of Hydrogen Peroxide and heat the liquid in the microwave for 10 of 15 seconds it get hot.

I then place the coin in the heated liquid and it starts to bubble and steam removing the layer. I repeat with fresh Hydrogen Peroxide if needed.

The coins clean up well and if copper, like a cent keep the brown patina.

 

[John-Edmonton]

I would stick with toothbrush and soap. Ultra sonic machines will cause bits of oxides being expelled leaving ugly craters, and acid makes it look even worse.

 

[Waterdog]

I stuck it in vaseline for a while then used a toothpick on it, then did it again and it came out great

 

[Coin Rescue Inc]

Nice,

Send a new photo!

 

[copperdave]

I notice there is a hole in the coin. I found a large cent 1830 and mine too had a hole, plus some letters/numbers stamped on it. I wondered why it was drilled and stamped

 

[copper kidd]

Try the Andres pencils, they work nice.

 

[rferrari]

Just let it soak in olive oil for a few weeks and then gently rub off the goop with a frayed wooden toothpick. The hole negates numismatic value but so what. I have found several large cents with holes cause farmers used them as washers. Peace Roy

 

[rferrari]

Just let it soak in olive oil for a few weeks and then gently rub off the goop with a frayed wooden toothpick. The hole negates numismatic value but so what. I have found several large cents with holes cause farmers used them as washers. Peace Roy