Original silver grille?

[starrider]

I purchased a grille that appears to have have been painted by the factory. I thought only the bone white grilles were painted silver. This is a black grille with the part number hand written on it. The silver was clearly painted before the part number was written on it. I have seen other grilles that appeared to have the hand written part number on them from the factory. Any thoughts or info on this would be much appreciated!