Sotheby’s has people that can authenticate a rare baseball card, as well as mundane things like documents.
You just don't get it, do you?
With a baseball card, the question is, was the document really produced by whomever whenever, as opposed to being forged sometime later in order to cash in on nutcase collectors' demand for rarities (IMO they deserve to be victimized, but that's just me LOL).
With a baseball card, the question is not, does the card state the correct facts about the player it is of. Those facts are already in the record, and they are any counterfeiter's starting point. You don't need the card to know the player's batting average! You only care that the card was really printed when and by whom it is purported to have been printed.
With a birth certificate, the only thing that matters is whether the document correctly states the facts of the subject's birth, not whether it passes muster as a document. So, we don't need Sotheby's. We need the Hawaii Department of Health. If they stand behind the document, it's genuine, no matter how sloppy the document itself might be.
Of course, in the current case, it's desirable for the document to be as sloppy as possible. That way, Obama can say, see, I really was born in Hawaii, now let's move on to the real challenges facing the country. All in full confidence that the sloppiness of the document will keep the nutcase birfers wee-wee'd up and making idiots of their side and affording future opportunities to revisit the issue and go back to the DoH for future smack-downs.