What’s the best product to clean ugly toning off bullion coins?
I know one of the big no-no’s of coin collecting is that a collector should never ever clean a coin. (Unless you’re like Daniel from CoinHelpU who knows how to clean spots off coins without getting the “Cleaned” designation by PCGS & NGC).
But I have some plain old 2020 American Silver Eagle bullion coins with no numismatic value and they have ugly purple toning on them.
Is it ok to clean regular bullion coins with zero numismatic value?
If so what product should I use to do so?