In most respects this coin is AU, maybe even MS. BUT Well, the "BUT" is obvious. If it were your coin what would you do? My current opinion is sell it for whatever I can get and buy a replacement.
Knowing you and your tastes - I would say sell. Me I have a low grade album I could stick it in. The color just seems off to me.
I'd hope to get XF money for it (that may be wishful thinking). As to the color, this image was done with a scanner rather than a camera. That could(?) account for that. I'd have to dig the coin out and take a look.
As I recall, if I were to drop it in concentrated nitric acid I'd get a really neat brown gas (which I believe is toxic).
I believe the brown gas comes from dropping copper coated zinc pennies in the acid and the zinc is causing the brown gas. But I could be wrong. Ribbit
We teach qualitation analysis in Chemistry with US Pennies and I've not seen a brown gas. After putting it in acid you do a spectroanalysis and figure out the contents of the coin which is listed in the government registries. Ruben
I Googled it and came up with this: http://www.chem.umn.edu/services/lecturedemo/info/Acid_Rain.html They label it a red-brown gas. There's another post on CoinTalk where there were several comments about how threads have a life of their own. They go off on tangents. This all started with me asking if the cent was recoverable, and we ended up in the chemistry lab. But we learn stuff that way. I don't mind as long as the original intent was satisfied. And it was in this case.