Value aside - you need to get the verdigris off the coin to prevent further damage as it WILL spread.
I guess it's a matter of which is better: 1) do nothing until the coin crumbles away to dust 2) 'clean' it to remove the green stuff preventing further corrosion I'll give it a whirl. I'll post pics of the process once I get started.
Hello Raxifarian... Nice Cent!! What flea market? Sorry about the New Haven Show.. GDJ is a great resource for information! RickieB