Hi, I'm not sure if these are errors or not... Any help would be appreciated!! Sorry about the size of the pictures!
hey I have the exact one 1982 Cent I will post it sorry I am no big help to errors yet. but the first one looks as if its been heated with some source of heat maybe. the third looks like a stain of another coin or maybe it was applied with some force in to the coin leaving its round shape edges. I cant tell you about the others.
The Colorado 25c is too blurry. You need to give us a better close-up and tell us what you think is wrong about it. Mind-readers frequent another site. The Lincoln cent may have been dipped in a white metal. I don't think it was dipped in acid to remove the copper layer because the details would appear to be softer. The NY SQ looks like it may have had another coin glued to it, and that is the leftover residue. The last quarter looks like it is the result of a grease-filled die. Possibly 1986. A grease-filled die is very common and can be found in one form or another on every denomination. Most are only valuable to a bidiot. Chris
First 3 Coins are not errors. The last coin, the Quarter is a nice one. As Chris mentioned it looks like a greaser isolated just on the date. I want to share this webpage with you - http://www.error-ref.com/struck-through-smooth-viscous-material-grease-oil/
Thanks for your replies! The Colorado quarter is discolored, it's the only coin I think I've ever seen like that. The other side is discolored as well. Thanks for the link, paddyman!