The wires alone scream bootleg to me, but I know it's not unheard of for arcade PCBs to have legit factory repairs with wires on them, so I told him there's a very slim chance that those alone don't mean it's bootlegged. Of course, the fact that there's a window on the ROM... I'm pretty much positive that THAT cements it.
Anyone with firsthand experience care to comment, just so I can lay his mind to rest he's doing the right thing as he files the eBayPal claim?

