Yes. This is legit

This is an original botcon Tigatron file card / tech spec. It is still in the original ripped up package. But the card itself is still mint. And you can cut it out yourself making it flawless or leave it as is

What happened?

The dinosaurs died

What happened to this box?

Ah you got specific. At Botcon, they held excess empty boxes just in case someone had received a damaged box. At the end of the show, the employees tore up the remaining few boxes. Like a little monster, I walked over and grabbed what remained.

And then like a little monster I somehow was dumb enough to keep this stuff this long in storage

This is a very rare opportunity if you're collecting just the file cards by themselves. Nobody cut these out of the boxes.