I am not addressing the Selective Service issue. That may very well be an illegal forgery. I am addressing the Birth certificate issue. The fact that Hawaii is tacitly tolerating his displaying of it as his defacto "birth certificate" leads me to believe they regard it as a legal document from their office.
Knowing that it is a cobbled together piece of work, leads me to believe THEY are the ones who cobbled it together, and if so it was likely done under a Judge's order, making it a legal replacement document. (Though not the truth, and not an original.)