I sent the owner of the yellow car a message asking him to pull off an emblem to see if there is a part number or not. Maybe he'll do it and we can find out for sure. Looking at the emblem, it sure looks factory to me.
Thank you LJM.
The emblems are die-cast, and they're in the same script as the "400" emblems. These could have been made in the 70's or 80's, but I've never seen them before until that black RAII car appeared in HPP. And as I mentioned earlier, when a set of these emblems went up on E-Bay, everyone was trying to come up with theories, and someone obviously wanted them. They sold for over $600.00.
If we get a final conclusion, maybe a moderator we can pull segments of this post out and place it in another thread. I have some more pics of the emblems.