The thing is though, my car was originally Gold....all the sheetmetal is the original gold. I just think I haven't been able to find the holes yet. My left fender has a bit of bondo so it might be filling in the holes.
Your car has deffinatly been repainted. Therfor it was prob covered up in the prep work. If that is a stick on Plymouth symbol then the prob just welded the holes closed, then ground it off. How long ago was it painted? It could have road dirt/crap covering up the weld plug. If it was just bondo pluging the hole it would have cracked and fallen out by now.
Take a magnet to it, see if it sticks, that fender could have been wrecked at one time.