I'm not entirely sure how authentic all of these are. I know ACE is the real deal. Have a bunch from The Real Seed Company also and those are authentic as well.
I've grown the Congo, Ethiopian, PCK, Panama, Malawi, Columbian Gold, Killamanjaro, Ketama, Pakistan Valley, Afghan Kush, Purple Paro Valley, Ciskei, and a few from RSC. Highland Thai, Mazar I Sharif, Syrian, Sinai and the ACE Guatemala going now. I've reproduced seeds of them all as well as making dozens of different crosses. I'm keeping busy.