In November 2019 at DCon aka the Designer Convention in Anaheim, CA, Mike Gong had an epic drop! Mike released 89 of these mystery (blind) boxes which those of us there had the opportunity to purchase. There were marbles and beads in the boxes, with 2 of the marbles being Acid Eaters! One of the Eaters was found in one of the first few boxes that were opened, but we never saw the second one come out, after a large percentage of boxes were opened, so that one is still a mystery....and this box could be it! (To the best of my knowledge.) There are other rare marbles in the boxes as well. I got 3 boxes, opened 2, got a bead in the first, and thankfully a pulsator marble (really wanted to get a marble) in the second. Sooo, I am giving someone else a crack at this one here! Best of luck to the winner! Check the last pic to see my pieces. All boxes come with an eater pin like you see, and an eater sticker that I'll include. ALSO, I had Mike sign the box as well (see pic), and there are only a small number like this. By the way, there is a sticker wrapped all around the box sealing it, and you've gotta cut or tear through that sticker to open the lid.