2021 Donruss Football Error!!! These inserts, Out of this World, Rookie Revolution, and Vortex, Lift Off, all have the same error. I believe that 1-3 sheet were run with no gold foil or partial gold foil. For sure 1 was sent out with no foil on these inserts. They then reran the next sheets but they ran them upside down so the gold foil did not match the cards.

I have only found 1 duplicate of the exact same card with exact same error, but that clearly means there are most likely at least 2 of every foil error and possibly only 1 with no foil at all. I have added some group pics so you can see these are a collectible set. They did not all come from the same box/case, I have been collecting them.