2002 LSC: Before & After

Well I didn't want to destroy a good coin if it went very badly.

Renaissance Metal De-Corroder that I bought years ago when I was buying dirty ancient coins. It uses Hydro Carboxylic acid to remove the corrosion. It will remove toning/patina if left too long. I was surprised that it also took off that black gunk on the coin.

You can see on the collar where it removed the toning some.

Yes initially I had the wrong date - 2022 but forgot to correct the rest of the title.

I have several badly corroded wheats I could try it on. This product is supposed to be able to be used on most metals coins are made from with the exceptions being gold and silver.

It'd be much better to practice on a copper coin and not a plated one. If you're working on your conservation skills, this exercise told you little as you'll probably never encounter a plated cent in that condition worth saving.

Looks way better than it did before.

Actually, I had an idea of what would happen on copper and bronze coins from ancient coins. Two things I had forgotten.
1. Some coins are too far gone to bother with.
2. Care and patience when working with the de-corroder. Leaving to soak brings bad results as copper is left dull red in appearance.

If this coin were left longer, the whole coin would be light reddish. It works down to stable metal and the metal stays stable for 14 days under normal circumstances. This was after about 4 hours soaking. Without finish or toning, the devices become hard to see.

Very interesting.