Looks like guesswork based on there being region versions for Wing War then assuming they did that with every game. Unless there's evidence of it existing then I'm calling that butt talk, or talking out of one's ass. You can change the region in service mode. Same with for example Lost World, nobody to my knowledge has ever seen different labeled roms on a rom board, you just change the region in service mode.
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Re: All Sega Model 2 chips have been decapped and identified
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