Oh crap, I think I confused you guys.
The one I'm looking at is the one in the top photos (small photos, and as you can see the unit I'm looking into is complete and such).
The faded one missing parts (larger pictures) is the closest thing to it I've found looking for info on this. I've included the 'code' (model?) number for the faded one for reference... assuming they're the same (or very similar) units. Sorry about the confusion guys!
As for the welder shown in the larger pictures, some guy on a welding forum got it from his granddad, and has plans to restore it. I think that's pretty cool. Me- I have enough projects to handle, so I'll look around and find a 'good original' like what I'm looking into buying.