2 of these were embossed molds and 2 of these were penned. The significance could mean that the penned ones were much older Bosses. There is also a major difference in that the penned ones are a smoother feeling plastic while the embossed ones have a blizzard or starlite feel in the rims.
We do our best to accurately describe each disc. Be aware there may be minor storage wear on any disc I list but anything significant will be mentioned in the items description. All of my discs are new/unthrown unless mentioned as USED in the title or description.