That's dust in the pics...It's basically like NOS!
Also got an NOS

Radiator cap

It's an A/C delco and was cheaper on ebay than I could find locally...was advertised as NOS...not sure if the part # is an old one but I didn't care
and got these nice 8 400 emblems from Sharpie...still going to try to find NOS ones at a swap meet but if not these are as nice as I'll ever find for originals. A little black paint and a quick polish and they'll be great!