Pottery & Porcelain Marks – Lines: From the 18th century to present, marks made up of lines straight or bent into waves, x's, crosses, and diamonds were used. The first line mark, two "crossed swords," was used by the Meissen factory in Germany beginning around 1725 and is still being used today. The handles of the swords are at the bottom of the mark and the blades of the sword point toward the top. Many companies including the Volkstedt pottery have used a version of the mark. Collectors are often confused by faked "crossed sword" marks. There are three unique marks to note: the English Registry Mark, Sevres Date Mark, and Meissen Augustus Rex mark.