I have never seen that Hemi emblem on a Superbird either, since this is not an official Chrysler photo, there are no numbers or nomenclature on the back of the picture. I'm not sure when the picture was taken, however, I know it was hung in Chrysler's Belvidere Assembly Plant, so I can only assume it was somehow related to Chrysler. Maybe a prototype vehicle and the emblem was dropped for some reason? I have several pictures of the white Superbird that was used as a promo car and it does not have the Hemi emblem, but I don't know what engine is in the promo Superbird. Maybe this is the same car and the emblem was removed before the promo pictures were taken? Who knows, thank you to everyone for their replies and comments.