After first experimenting with a few memorials and low grade wheats I moved up to coins with a little value. It seems that coins like this patriotic that had an overall greenish haze and greenish gunk around the devices are the best candidates for preservation with verdi-care. A before and after. I was very pleased with the improvment. Unfortunately it's not a miracle product. I have an otherwise nice brown AU 16S wheat with a spot of corrosion that I was hoping to save. This type of corrosion Verdi-care wouldn't touch.
Yeah, I tried three different applications, working it with a toothpick each time and it may have improved it very slightly with each attept but never really showed much improvment.
soak it longer, just make sure it doesn't dry so use a lot and put it in a container or something to keep it from drying out. I soaked some of my bad ones for hours. maybe @BadThad has some advice on his product that could help you out.
The ten minutes I soaked was per the instructions. (which I've subsequently misplaced) BadThad could give you a better answer.
Nothing can remove corrosion, nothing. Corrosion is the pitting in the metal itself, the destruction of the metal. Veri-Care only removes the residue, the green fuzzy, flaky looking stuff, (verdigris) that is created by the corrosion. That green fuzzy, flaky looking stuff is what the metal is turned into by the corrosion. Think of it like a piece of paper. The paper is fine, but if you set it on fire and burn it all you have left is ash. The paper is like the metal of the coin, it's fine until it corrodes. But once it does corrode, the product you end up with is the green fuzzy, flaky looking stuff - which is like the ash.
Just an observation, the verdigris on the token looks like the loose type, while the verdigris on the cent looks like the cemented-in type. Verdigris, I think, has types, or maybe stages.
That would be appreciated. I suspect ,though, that even if I get that blob of corrosion off there will still be a discolored spot.
Yeah, it will leave its "shadow." The 1916-S is just such nice detail, too, it's a shame to see them like this.
Guys, apparently there's something you don't understand. The verdigris, the green stuff, that is NOT what is causing the corrosion. The verdigris is merely the RESULT of the corrosion. The verdigris is what the metal of the coin is turned into BY the corrosion. The thing that causes corrosion is moisture, plain old moisture. Moisture reacts with the metal of the coin and makes that metal corrode. When there is verdigris on a coin, any coin, part of the metal of that coin is gone, and gone forever. That metal no longer exists. The only thing that Verdi-Care does for you is to wash away the verdigris, that's all it does. That's all it is supposed to do. That is all that is even possible for it to do. That metal that has been destroyed by the corrosion cannot ever be repaired or replaced, once corrosion happens it's over and done with and there is nothing you can do about it.
Two quibbles, 1) Moisture doesn't do Jack by itself. Water doesn't react with most metals used for coinage, but it does provide mobility for other contaminants, wherever they come from and 2) After any corrosion is removed, I think VerdiCare gives some protection from the re-occurance...Thad will have to address that.
Fair enough. I just know that verdigris cannot form without moisture. The rest of what I said is all too true. And it seemed like some didn't realize that. edit - my primary point is that once damage is done by corrosion, there is no such thing as removing it, or repairing it. Yes Verdi-Care removes the results from the corrosion, the verdigris, but it cannot fix or repair the coin. As far as continuing or additional corrosion, you can leave the verdigris on the coin, and as long as you protect the coin from moisture, there will be no more corrosion. And thus no more verdigris will form.
