Well, I bought a number of GPUs over the past week or so, and they are mostly unique or interesting in some way. I'll update every few days or so.
Here's the first one:
NEC/Matrox Mystique with no display out. It's for a Japanese-based PC9821. D'oh!
Surprisingly, it does get detected and installed automatically in Windows ME (as a Mystique 200), but I can't do anything with it of which I am aware.
I thought I was buying some kind of card which operated like a PowerVR. I spent about 15 seconds researching it before I bought it because I didn't want to lose the chance of getting it. Well, after I bought it, I discovered I bought fool's gold (I didn't look, but with my luck on this buy there's a half million of them available for $0.25). I didn't cancel the sale because the seller shouldn't suffer for my Matrox "Myst-ake." One can't spend a lot of time waffling on an eBay purchase when something rare (not so rare/in demand in this case) pops up. The price paid for little hesitation is what I have here today.
If there's some Video Card collector out there who would like to make a trade, send me a PM with what you have available. Some kind of Cirrus Logic card will probably do, haha!