Well, I think it's a great case in point and the before and after PIC's Chris shows here really add to the value supporting what can be done by collectors.
I do understand what Jason is saying, this method, or any cleaning method for that matter, should only be used when absolutely necessary and when you know that the results are going to be better than what you have currently. However, in my experience with zincpest, it doesn't stop. Even if you have a small area or the finish is just starting to fade, the time to act is now as it will not get better on its own overtime, only worse.
You have to ask, what's important to your collection. Corrosion comes in various forms and even the green verdigris will eat away at the metal. If you care about the piece at all, it's better IMO, to at least try to preserve it instead of just leaving it go.
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Not to take the subject off track but, here's another case in point of what verdigris does to the metal overtime and if left unchecked, only gets worse as well.
A "before & after" shot. Don't worry about the apparent difference in the medal, it's all lighting differences here between the seller's flash and mine without. The important aspect is the green vedigris that was removed.
The remaining darkened area is now permanant and what verdigris does to the medal finish over time. If not removed, it only gets worse. Still, much better and more importantly, the medal is not being eaten away anymore by corrosion.
Tim
I do understand what Jason is saying, this method, or any cleaning method for that matter, should only be used when absolutely necessary and when you know that the results are going to be better than what you have currently. However, in my experience with zincpest, it doesn't stop. Even if you have a small area or the finish is just starting to fade, the time to act is now as it will not get better on its own overtime, only worse.
You have to ask, what's important to your collection. Corrosion comes in various forms and even the green verdigris will eat away at the metal. If you care about the piece at all, it's better IMO, to at least try to preserve it instead of just leaving it go.
---
Not to take the subject off track but, here's another case in point of what verdigris does to the metal overtime and if left unchecked, only gets worse as well.
A "before & after" shot. Don't worry about the apparent difference in the medal, it's all lighting differences here between the seller's flash and mine without. The important aspect is the green vedigris that was removed.
The remaining darkened area is now permanant and what verdigris does to the medal finish over time. If not removed, it only gets worse. Still, much better and more importantly, the medal is not being eaten away anymore by corrosion.
Tim
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