I snagged a lot that included this very mysterious looking card yesterday.
The attachment mystery_vibra16.png is no longer available
That's the best picture I have of it at the moment. The squiggly white PCB logo indicates that it's probably a DCS brand card (though they may go by different names too, I'm not sure), but it has a Vibra16 chip (CT2501 probably) and, most interestingly, what really really looks like a Yamaha OPL4 chip set. There are other wavetable chip sets that resemble these, but it really looks like a YMF278B + ROM to me. (The markings on the chips really look like these.)
Google searching any of these terms together comes up with absolutely nothing, so this seems to be a very rare card. I can't wait to tinker with it. 😀
Anyone ever seen or heard of anything like this? I know that Vibra16 and SB16 chips sometimes ended up on third party cards, but I've personally never seen one with wavetable and definitely never with OPL4.
EDIT: Actually, it could also be a Samsung SEC KS0164 + ROM. The ROM chip looks a little too narrow to be OPL4, but it's very hard to tell. The printing looks more like what is on the OPL4.
Either way, this isn't something I've ever seen before.