Finally! A 3D digitizer that works with the Apple II. I just acquired this not too long ago. I have yet to power it up and give it a full test, but, the potentiometers seems clean and noise-free on my dmm. Includes a full manual, disk, and engineer's handwritten notes.
In the same batch I found a second, seemingly official, Alpha Syntauri demo record. I'm saving for one of those contactless no-stylus record players. While demo record #1 is flexible, this one is a little more stiff. And I don't want to take any chances with it breaking or anything. Besides, they don't have much playtime, so the first time being played would give nice sound. I have cassette recordings of them, but they are seriously overplayed.