I need help to verify a Super Mario 64 sealed copy!!

Hi guys, I'm from Brazil and I collect N64 games, but mainly Playtronic N64 games. Around these days, though, I found one original N64 Super Mario 64, supposedly legitim H seam seal. 



The seller assured me that it was never used and never opened (he doesn't know about different kind of N64 seals and stuff like that), but i still have my doubts. Below some images of the game:



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Thx in advance, I really appreciate your opinion, guys^^
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