I agree. If the coins aren't of any value you could use soap and water but olive oil would work better on some of them
If you are unsure of a coin and don't have a Krause book handy feel free to post some pics here and we can look them up and let you know of it's information and guesstomated price.
Just in case
If you are unsure of a coin and don't have a Krause book handy feel free to post some pics here and we can look them up and let you know of it's information and guesstomated price.
Just in case




















