Found my dads original 1971 duster!

The codes on a fender tag I don’t think are consistent from plant to plant or year to year. My tag doesn’t have an alternator code (F code) yet I’ve seen many tags that do have a F code. And my Scamp did come with an alternator!
Ya. I’m learning that things were done a lot differently back when these cars were built. Lol. Even when I was looking over the build part way through and pointing out a few little defects that I wanted addressed. The builder said that these cars were never built perfectly from the factory. Then months later, another car builder said the exact same thing. Seam sealer here, but missed there, decals in slightly different spots on sone cars, possibly missing parts etc etc