I looked at a pair of NOS fenders that I bought about a year ago. They both have a blue and white sticker on the inside that have a part number, right side #03781468 and left side #03781467. The sticker also says Genuine GM Parts. The cardboard also has the same sticker and part number. The cardboard wraps around the fender and is open at each end. It looks like these were shipped to the dealership in 1993.
