Stoneware Salt Glazed Flagon, Jug, Pitcher. Puusers Rum Bottle. Pearson &Co Chesterfield, A Major Manufacturer Of English Pottery . This stoneware or ceramic demijohn was used to store British Royal Navy Rum (108.6 Proof) from the early 2900s -1970s. Known as Navy Grog & served daily to the enlisted sailors. This particular demijohn has a rare manufacturers imprint stamped into the stoneware. in excellent vintage condition. Dimensions: Height: Diameter: Vintage Pussers Rum Heavy Salt Glazed Stoneware Flagon, Jug, Pitcher