Dubois Brewing Company, Dubois, Pennsylvania - Brown variation? - Continental Can Co., Used Unsure if this is a paint variation or some sort of chemical reaction in the red., Grade 8.5 Study our large pictures for condition details. Many of these bottle caps were glued to a board with silicone and may have some of that glue still on the underside. As usual, if you have any questions call or text Erik at 919 - 807 - 9147.