Lincoln Wheaties In Olive Oil For Over 6 Months

This would be a good test coin for verdicare. It's almost verdigris plated!

Same thing I saw in my testing with olive oil. Yes, the acids have removed some of the verdigris, but they also attacked and dulled the metal.

Your coin has heavy verdigris. When it's reached that stage, the coin is a goner, plain and simple. If you're determined with a heavily corroded coin, you have two choices:

1) Strip the coin completely down to bare metal with acid.
2) Deactivate the verdigris and keep it in an air tight environment.

Thanks for the suggestion, but VC was definitely not designed to remove heavy verdigris like this. However, it would deactivate it.

Thank you to whoever fixed my title typo!

This has kinda turned into an experiment for me at this point. I can see how maybe the top layer of verdigris was removed and now what's left is etched into the coin. Just for poops and laughs I soaked the coin in GUNK for 5 minutes and nothing at all happened. What type of acid are we talking about for stripping the coin? Something I would have access to?

And yes, the pictures, barring the first, are all the same coin

Nitric acid works best on metals, but I don't think it's available to consumers. However, you can buy muriatic acid as most hardware stores, it will work too.