69-70 grilles?

[un4gvn!]

Here is a photo of my two grilles. I have questions if their GM or china made. Did GM stamp a number or put a specific mark any where on these grilles? I took the 70 off a wreck in the rear c10. The 69 is my original grille that was on my truck when I bought it ten years ago. There is a dealer here in western PA. that sells a lot of after market stuff for cars and trucks. I was there the other day and asked if I can see one of the 69-70 inner grilles. It looked nothing like either one of these two grilles. The salesman told me it was for both years. I know for a fact that both years are not the same. Next question. Are all the 69-70 outer grilles made of different metals? The 70 grille I can stick a magnet to it. It had the aluminum anodize on it. My 69 outer grille has the anodize over top an aluminum metal. What did GM produce?