I saw an example of a strikethrough that was a zipper. Made an interesting error. on the reverse of this ‘50S wheat is a similar mark. Is this from a collision with a receded edge or something else, or possibly a strikethrough?
This coin has so much damage from circulation it would be hard to say what caused the reeded looking area.
That is an interesting mark. I would probably see if I could compare it to the reeds of reeded U.S. coinage and see if any match up. It is hard to know, however. Perhaps someone else will be able to determined if it is a strikethrough or if it is post-mint damage.