[EBAY]320207125250[/EBAY] Everything screams legit, apart from the lack of a sticker on the trailer...
That is an original box but I think the trailer at least might be KO. Very odd.The trailer sticker could have been removed but I don't know what purpose that would have served.
Too much yellowing of the trailer to be a KO. It's probably in poor shape but a real OP none the less.