RBFFS English

More of a general question. Still trying to learn about a lot of this stuff. I opened up my RBFFS English to take a look at the PCBs. I matched them up against the PCB pictures on arcade-collector.com. Everything matches up correctly except for the chips on mine say "Toshiba". I'm assuming this is legit. Is this a common thing?

http://i1030.photobucket.com/albums/y363/hubes1982/IMG_3567_zpsj2nllc2u.jpg

Snk used whatever chips were available/cheap at the time. Mask roms are usually a good indication that its legit.

It's definitely legit. I'm pretty sure there is more games around with those Toshiba roms than with the no-brand ones.