This was purchased through the Propworx eBay auctions that occurred after the official 'Kevin Smith Sells Out' auction event.
It is the back-up pair of gold briefs/underwear intended to be worn by Jason Mews (Lester) for the publicity photos for the movie. He can be seen wearing the hero version on the acutual DVD label (image provided here for reference).
For some unknown reason the folks at Propworx were lazy and supplied the same photo for both the hero and back-up versions.
An image of the Propworx COA is provided for reference.
