I had reason to test these and hope to have momentum going forward with over 100 other PCBs. I'm never going to get them all organized and listed so I'll try to list them in chunks as I get to them.
First up are (2) Vanguard PCBs. They are fairly clean (trust me, I have a couple that are really bad!). I tested them on my bench with my homemade JAMMA convertor.
(1) (027054) Works and plays, but clearly has graphics issues. Sound and speech sound good.
(2) (019786) Works and plays, graphics look good, sound is good, but in my brief testing there was a speech glitch going in (or coming out?) of the energy tunnel?
I'm asking $75/each + shipping. Shipping both to the same person should be cheaper.....so why not buy both? I offer no guarantees, sorry. I try to give full disclosure though!