I'm not an expert by any means but I did find out an interesting fact on window stickers when I bought my survivor 69 Impala which had 'A' window sticker with the car when I bought it. All the OEM stickers applied at the plant had a rubber stamp of the last 6 of the VIN after the first typed 7 numbers. If by any chance the window sticker was destroyed in route to the dealer, say by the transport driver rolling down a window, then the dealer would contact the zone office, I believe, and another window sticker would come in the mail. The dealer would just reapply. By law the dealer cannot remove this, only the buyer. It really is hard to say if the sticker is a reproduction or a retyped zone office piece, way to blurry. Here is a pic of mine if there was a way to compare them.
Anybody know if this dealer is still in business?