Best of luck unloading that as a lot. The 511AD, 512 and 519 are interesting historically, but the rest look like old scopes and specialty equipment that would take years to find buyers for. If I had a retail business, I might have a working 535A as a display (in the winter) but I'd not want to pay big bucks for it. There are a few items I didn't recognize, but the majority is stuff that is roaming around if you look, not ultra-rare historical artifacts. At least it is neat and clean, but if they aren't going to itemize and allow shopping I won't be showing up with a box truck and a suitcase full of cash.