@ley, you may also want to check out this recent thread which has some very interesting information:
www.elitefourum.com/t/articuno-zapdos-moltres-cosmos-holo-error-theory/28177/1
Long story short, it’s a legit card but the existence of that exact error is questionable. Some could be legitimate straight from the printer, but it is an error that can be easily fabricated.