TheCoilist
Elite Member
Not sure what "cookie coins" means (I kinda new at this), but yes, I have used this method to clean up clad that I found at the beach, and I can't tell any difference in that, and the coins that I find at home.
I hope this is what you meant ?
Cookie coins are coins that have been beached a while and have had things caked on them. See attached.
White coins are cookie coins exposed to beach elements. Next to that is typical dirty clad.