1973 Topps baseball front - wacky packages back

Autophagy

Never heard of this before.
Anyone know the story or production numbers

https://www.ebay.com/itm/405201758412?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=d-N34h60RLK&sssrc=4429486&ssuid=l0X1ohu8Sm2&var=&widget_ver=artemis&media=COPY

coinspacks

Cool item

1954

very cool

PaulMaul

These exist for all cards from series 2 and 3 of the 1973 baseball set. They surface now and then but certainly don’t exist in large quantities.

PaulMaul

Here is a page about them….

https://wackypacks.com/stickers/baseball/

ETA: my mistake, it was series 1 and 2…