69 cuda emblem question

I finally have my 2 fender scripts for my 69 "S", but the weird thing is, one of them is painted black on the inside, and the other one isnt. Part # is 2901852 for both of them, both have the pentastar on the back as well as another #63259. They are identical in every way except the black paint. And both emblems are in mint shape, paint is great, so I dont think the paint was an afterthought. Any ideas as to why one is painted and not the other one?? I always thought 69 had no paint on the fender script.