Got 10 rolls of Lincolns from bank. Most had at least some coins like this - 3 worst rolls were 2/3 full of these. Some of this can be washed off but leaves underlying corrosion. Did find three missing dates without the deposits, two very recent and a 1970, and a couple (without deposits) in better shape than what I had. Some with deposits would have qualified as replacements. Even found a 1919, but it took a magnifier to determine that and mine was better. Also found 3 Canadians, a 2-cent Euro from Spain (can you find it?) and a badly corroded Roosevelt, so despite the disappointment I guess I came out ahead, both collection-wise and financially!
I never clean coins and I don't suggest it to anyone. But in this case, clean those coins and wash and disinfect your hands.
Meh, not much could survive on that stuff for long. On the other hand, I'm guessing there was a good bit of general filth as well...
These look exactly like the coins I dug up and tumbled w/ vinegar, water & sand before rolling. (But only when they were not washed properly) And yes, I always checked for rarity/collectibility before tumbling. J.T.