If we're thinking about the same auction, I have a bunch of photos of the items from the auction site at that time, and while it's interesting there really wasn't anything that could be called a "blockbuster", unless your idea of a blockbuster is a baseball cap signed by the band.
The most interesting things in that auction to my eyes - again, if it's the same one being mentioned - were songwriting forms/contracts and some handwritten band scores with full band arrangements. Those actually turned out to be a bust too, because I had assumed they were original from the recording sessions but instead they were for one of the 70's or 80's incarnations of the BB's touring band, and the arrangements were for that band rather than original studio scores.
I don't recall ever seeing tapes, audio or video, mentioned at that time, and I wouldn't think they'd store any kind of audiotape in a normal warehouse alongside paper archives and Mike's baseball hats anyway, since tapes need to be in a climate-controlled environment and even a band that hires a lawyer who shows up 15 minutes late to court would take those precautions with any valuable tapes.
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