There's a more detail in this auction listing, and there are two samples up on Martin Atkins' Facebook page, but the clips provided don't really give you the proper impression of the fidelity of the recording. I took the time to run them through autotune, a pirated Waves noise reduction plugin, and then compressed the shit out of the recording so that people could complain about the loudness war and dynamic range, and am presenting you my edits of the demo clips below. And don't tell me you want a copy on vinyl because it's not happening, chump.
Well, obviously I didn't actually process those at all. Someone posted these clips online earlier this year, but I'm not sure if they want their name out there. But they're a good 20 seconds longer than what else is available, and seem to be recorded straight off the tape, rather than from a mic held somewhere near a speaker that's playing back the tape.