White Label Space Shuttle in NTSC. Does anyone have one?

[snakeeyesdd]

I had the blue label version of space shuttle and I seen the white label so I passed on it thinking it was a pal cart. Something told me to go back and buy it so I did. I get home stick it in the system and it worked so its not a PAL. I read somewhere that Activision only released the whit in Pal format. But this disputes that claim. Does anyone else have one of these's?