My coin has red,orange, and greenish coloring on it. Also, how much is a 1972 double die worth? (Sorry for wrong forum)
Would really need to see pics. If it's not toning then it's something applied to it post-mint. Chemicals, paint, etc.. As for the 1972, depending on the variety and the grade $45 - $500
Are you talking about two different coins here, one with coloring (that is not toning) and a 1972 DoubleD Die?
Ok I will post pics and yes it's two different ones and also what about a 1975 double die? No mintmark.
If it's actually paint, some acetone might be able to take it off, but it's all conjecture until we see pics.
Sorry to say that that is not natural toning on that 1964 cent, some type of chemical or reaction to a contact of something corrosive occurred, which collectors refer to as PMD or Post Mint Damage. Maybe something like bleach or laundry detergent with bleach.