I saw this earlier in the week at my friends game store and today it came home with me.
Long story short the kid who owned it put the sticker on his system. the grey NWC90 cart was given away a long time ago to a friend. and after he moved away he left the system behind. His father traded it in. My friend told me when i came to work on monday i have something you might like. and here we are saturday and its mine now. Works fine still.