Thanks, obviously no bit behind the smudge then, it looked suspicious on the lower-res scan. =)
Yeah, it's cool how all traces are visible on the back of the VFD panel. kevtris has made loads of photos of them.

So, these games are Gakken made, as you mentioned before it's labeled on the PCBs. I can find the Japanese Poker game on Google, but not the other one.

Last edited by hap; 04/19/15 07:40 PM.