okay so i got the cabinet. It's definetly a Sunn 215. the badge was in deed missing but the area where it was was noticeable, so i'll be on the hunt for one of those now. the grill cloth has a tear in the bottom that's about 3 inches long, it's not an awful tear, but it's a tear, a few other nicks in the grill cloth but nothing major. the tolex is in nice shape and will be i n even better shape once i clean the whole thing up and down. there definetly is no backplate, only some crude after market joke for an adjustment holding up the single input. the speakers are old Altec Lansing 15 inch drivers cast frame or whatever he had told me, he didn't talk much about the speakers. I plan on taking a bunch of pictures to get a more proper identification. It's rear loaded and has about 400 screws in the back of it so taking it apart tomorrow should be a treat. the guy had a ton of stuff in a little apartment, it was unreal. he had a second bedroom that looked like a warehouse of just stuff. tubes, speakers, rack stuff, amps, cabinets, etc. The guy just happened to have an old Marshall Major 4x15 cabinet blocking the closet door. guys 2 room apt. was like a warehouse. He gave me 2 as yet to be identified matching old stock 6550's and an old Tung Sol 6550 for nothing. it was a good deal! so it seems!