https://goccf.com/t/62434&whichpage=9#499045This is my results update for the post above.
What I did first with BadThads Verdi-Care was use a couple common coins from change first.
I had a 2000 P nickel that had a horrible obverse that was 70% covered with a bright green verdigris. It was not old and the green seemed to be rather thin.
I had a clear glass dessert bowl and I placed a small square of paper towel on the bottom.
With the eyedropper I put enough Verdi-Care on the one side of the coin that was green to cover it and watched it.
Within about 30 seconds I could see the green actually lifting off the surface.
At this point, I feel I should have taken the coin out rinsed it with water and used a microfiber towel soaked in distilled water and wiped it down. But I didn't. I think it would have been a great fix but I waited too long with the Verdi-Care floating on the obverse and when I did do what I said above at about 1 minute to a minute and a half, the verdigris was definitely completely gone but so was the luster and it had a very white appearance everywhere that the green stuff was. So, lesson learned. DO NOT OVER SOAK!
Oddly enough, I had a similar situation on the reverse of a 1995
Lincoln Memorial cent and gave it about a minute soak ( knowing that 30 seconds is suggested ) and the reverse came clean but was very dark and had a white film over it.
( I am not done with these, I think another shot once they settle for a couple days may help lift that white off the cent and maybe the nickel will darken on it's own. )
Finally, a 45 second soak removed a lot of the green on a 1967 Lincoln obverse. It could use a second shot to see what that might do.
These coins need to "rest" I think.
The best results were from a couple more important coins.
A 1916 D Buffalo had brown verdigris and green on both sides. While it was not completely removed, the coin itself looks better and the problems seem to have been reduced by perhaps 40 %.
Maybe a second crack at this in a few days will also improve it some more but I do not think that it could ever be completely removed.
The same process of about a 45 second coating on each side and then a rinse and wipe down with a microfiber cloth produced even better results on my 1854 Large Cent.
The cloudy verdigris was reduced by about 60% and also a thin layer or haze of green that was covering the entire surface completely disappeared. The color of the coin stayed pretty much the same.
BEFORE 
AFTER
BEFORE
AFTER
I am not a picture taker. I hope my verbal description is good. I can see results, I can also see that certain coins will react different than other. I think experience working with VERDI-CARE will help with what results one could expect after a little experimenting.
It seems that my older coins cleaned up better than the newer ones.
I have a few more yet to do.
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HURRY UP ALREADY! ! ! 
Posted 04/21/2010 08:21 am
I have so many excuses not to get this done. I will though. I will report on every time I use the stuff and how it worked out.
