The symbols on Pabst Blue Ribbon bottle caps correspond to all 52 cards in a regular deck. Soda and beer wholesalers frequently use bottle caps as promotional items. The playing card symbols on PBR bottle caps encourage drinkers to complete their collection by purchasing more of the same brand.
PBR bottle caps can be used to replace playing cards in any game that requires a standard deck of cards without jokers. Complete sets have been assembled by collectors and are available for purchase on eBay and other online stores. Collectors can now trade caps using social media platforms like Facebook and Twitter.