To learn more about Weller Pottery, also visit: Weller Pottery Company Profile Weller Pottery Price Guide Weller’s Louwelsa Line Below is a sampling of genuine Weller Pottery marks including dating information where available.  This mark can be found on a wide variety of pottery items and various lines produced by Weller during the years when the company was concentrating on fine hand-decorated art pottery. Those hand made pieces are the most valued among ardent pottery enthusiasts. The term “faience” refers to a type of tin-glazed pottery with a smooth, glossy finish. Many companies made this type of pottery, including Rookwood who is well known for its beautiful faience tiles among other wares. To the left of the Weller signature is a secondary artist’s cipher, “D.L.” in blue, which is that of Dorothy England Laughead who decorated many Hudson pieces during her time with the company. Having an artist’s cipher present on pottery is a boon for collectors who value knowing about the artisans who produced the pieces almost a century ago. The Hudson line was introduced just prior to the 1920s, dating this mark to that time period – late teens to early 1920s. Some of the “jugs” shown in the center of the Weller Pottery wording have a flat bottom, while others have a wavy bottom (rather than completely round like the one shown in the photo here). Regardless of the variations in the shape of the center jug, these black ink stamps all appear to date to the same time period in Weller history. Pieces with much the same Weller mark along with the words “Since 1872” in a similar style indicate pieces made after 1935. During this period the company was producing only molded pottery, and no longer employing artists to hand decorate their wares. The molded wares are not as desirable as hand made pieces, but they are still considered collectible at a lower price point.