Opened Talk N Action James?!?

Honestly, it looks like the left side of the tape was scrunched up due to age. I say this because it looks like the right side of the tape is intact (no sign of tape residue outside the boundary of the tape edge). I’m not sure about the slit you mention, but assuming the tape has been slit along the seal, I’d say it’s still unopened. But that’s just my two cents. As an aside, I’ve always been frustrated with the cardboard tomy packaging. The proverbial line between sealed and unsealed is a dinky piece of scotch tape!

Edit: I realize that it’s actually the literal line between sealed and unsealed is a dinky piece of tape! Nothing proverbial about it ?!