This isn't an official product is it? Looks like a modified Pro Play Home Arcade with extra buttons added. Ergonomicly placed arcade buttons weren't really around much back in the NES/SNES hayday...
Where did you get the cabinet?
You know I'm not totally 100 percent sure but I could ask my dad because hes the one that got them for me. I do think that he did some modifications to them. A few months ago the cable guy came to my place and saw my NES, SNES and Sega Pro play home arcades. He wanted them so bad that he said how much would it cost to get these from me.