What A-833 is this?

Honestly if he's sending you these vague pictures of numbers and not the whole transmission and the front of it and everything like that I would be leery...
I’m just looking for what it is. Is it an A Body? Is it an overdrive(unlikely) it’s a 3 hour drive and the guy got it in an estate sale he has no idea exactly what it is. I’ve been looking for one for my 4 speed swap and this one is cheap.