Pic. # 2 & 3: I would second post mint damage…reminds me of coins that have gotten the lawn mower/weed whacker treatment.
Wish I could get better pictures, it's a number 2 on pics#2 and #3 #1 looks like a piece of hair or wire is under the copper plating. #4 is ( under a microscope) clearly extra copper dripped on the 9 and 8 in 1983
Here you go I took it out of the case.. the line stops right at the rim on both ends. there is nothing on the rims on either side.
It's not a number 2 on the 1982 cent. It is a mark left when the coin was damaged, probably by a reeded edge of another coin. The 1983 has a spot of rot under the plating that is breaking through. The 1985 cent has a pocket of gas under the plating. We call it a plating bubble. Thanks, Bill
Extra Copper on Letters and Numbers. Are these types worth keeping too? #1 is a 2002 with a deposit of copper in the first " 0 ". #2 is a 1994 with a copper deposit in the second " 9". #3 is a 1983 with a copper deposit in the " 8 " . I have a bunch of these and just wondered if I am wasting my time keeping them.
I agree with Bill and will note the '85 with a plating bubble is sometimes called a linear plating bubble. Anything a collector deems interesting to them can be "kept," but they aren't worth any extra premium. Having them on hand to compare to other coins to in the future can be a good idea too.
These all have Die Breaks, not copper deposits. Die Breaks appear raised, or opposite of the actual recessed break in the die. They are very common.
No...they are not worth keeping. You will see them by the thousands if you search rolls for any amount of time. The linear plating bubble has no premium attached to it but it is a nice example. I would keep that one, and label it so that you could use it for future reference. Thanks, Bill