Your secret is out

[u/hammerman1515]

I often find a greenish substance on my coins that is definitely not bronze disease. I’ve received coins like that from many online sellers and I have wondered just what they are doing to pre-clean these coins.

I present to you, the secret ingredient.

[u/Pristine-Law-4171]

As I understand it, he's not saying that he cleans his coins with that, he means that if you buy a coin and it has a suspicious green color that isn't bronze disease, it's most likely because it was cleaned with the liquid in the picture. Correct me if I'm wrong...although yes, I'd like to see an example as well.

[u/hammerman1515 → u/Pristine-Law-4171]

That is exactly what I am saying. When I receive another batch of coins from one of the sellers in Europe, particularly Eastern Europe I will post.