66 Chevy Grill Material

[Regular Jim]

Hey,

I have tried searching and I cant find much but I was wondering if someone could tell me what the material is for a 66 grill is? From what I can find it is anodized aluminium but were they all? Mine is painted in primer and the back side of it looks pretty rusty (surface) making me think that its not and am trying to determine whether its worth the effort to try to strip and polish if its just going to be steel.

Thanks,

Jamie