I purchased a trial size of verdicare last week. I've tried it on several cull coins to see the effect on them first before trying it on more valuable coins. So far I have seen little to no effect on the coins I've tried so far. Is this safe to use on nearly uncirculated coins and will it effect the luster? How long should a coin like this one be soaked? Appreciate any help here as I'm clearly a novice with this stuff.






















