Quote from the sega-16 forums
Front cover ... OK, it's in Chinese instead of Japanese, nothing a bootlegger couldn't do;
But look at the code on the back;
670-1416-11 ... Chinese language with Japanese code, with Hong Kong region code, whilst nobody knew about it.
So let's look at the spine;
Wow! G-5510, one of the missing early game codes (Japanese version is G-5504 ). So let's look at the ROM header ... it's G-5510! I'm now pretty convinced that this is a legitimate first party release, but there is one final way to know. The cartridge sticker.... it's in Chinese instead of Japanese, so it can't have the same code as the Japanese sticker (which isn't widely known, and was even less well known back then, I sincerely doubt that any bootleggers would care about adding region codes when Sega had only just started using them) ...
Anyway, the cartridge sticker;
Chinese sticker with Chinese language and proper Sega code with additional Chinese Sega code! Personally I'm convinced that this was initially a legitimate first party release.
Wow! what a load of crap! I just posted a load of interesting pics hosted on imgur ... not a single one shows up on here! The only way I can get a pic to show is if I cut and paste an old picture, what a load of bullshit! I've wasted too much time trying to post something interesting (that isn't even hosted on this site), I can't really be bothered to continuously try to post pictures that are auto-blocked for no reason."