【Goebel】 Merkelbach Ceramic Beer Stein / Beer Mug This is a ceramic beer stein that was at my parents' house. It seems I received it as a gift, but I'm selling it because I don't plan to use it. I cleaned it with dish soap, but the original color or dullness remains (see images). The bottom is marked "Merkelbach Goebel Salzglasur." The following is a summary provided by AI: --------------------------------------------------------------------- Goebel Merkelbach Salzglasur refers to stoneware products made by the German porcelain manufacturer Goebel under the brand name Merkelbach. These products are known for their salt glaze (Salzglasur). They are particularly famous for beer steins (Bierkrug) and pitchers. They are characterized by a unique rough texture and blue or brown cobalt glaze, and are popular collector's items.