Identify German porcelain, ceramic and pottery marks by looking at the bottom of the piece for the mark and then using an online guide such as Old and Sold Antiques Auction Marketplace to find the maker of the piece. Other online guides are found at the Porcelain Marks and More and International Ceramics Directory websites.
After finding the mark, compare it against online databases to see an image of the mark and the name of the company. Old and Sold Antiques Auction and Marketplace contains a directory of dozens of German pottery and porcelain marks listed alphabetically. For instance, the eagle icon with A.H. and Annaburg written below it means that Annaburg, established in 1874, made the pottery. Annaburg also marked its pottery with the word "Glover" or crown icon. A piece of pottery with a lion mark on the bottom along with the initials H.C. means that Hesse-Cassel Porcelain produced the piece in the 1700s.
The Porcelain Marks and More website lists marks according to the city or area which produced the pottery. Ludwigsburger Porzellan-Fabrik, a porcelain company, created porcelain under the mark of a crown with two intersecting letter Cs, one of which was backwards. The mark altered throughout the years from the original 1759 version until the 1947 version of a stylized R beneath a crown.