Interesting Misprint Value

Not sure if this is the right place to ask this, but I was given a small collection from a house clean out. The boxes/binders were in pretty shoddy condition, but the cards inside were all in pretty good condition, for the most part.

While sifting/sorting through, I came across this small stack of misprints. It was an interesting type of misprint I had never seen before. Looks like it may have been an entire booster.

It looks like it was a sheet of cards that was printed, and then printed on again, before cutting. However, it looks like two different sets: M21, and Jumpstart.

It’s just weird because it’s like SOME of the card is there and SOME is not. I wasn’t sure if these were misprints or just a result of the poor condition the cards were kept in.

Again, the cards themselves SEEM in fine condition. They don’t feel dirty, or gritty, or bloated (as if waterlogged). It doesn’t SEEM like some weird case where they got wet and ink got transferred from one card to another via a case/sleeve/binder.

Just curious how rare this is, as far as misprints go, and if it’s a “valuable” misprint or not.