I've got a tested/working Sega Wonderboy PCB available for sale or trade. I would prefer to trade it for another working board or two (pre-1990 stuff only) but will consider cash offers too. PM me if you're interested. Thanks.
I have a couple non-working DK boards and a non working DK Jr. MikesArcade was willing to trade me a fully working DK boardset for these, if you're interested.