This is something that has to be developed over time.It is not that any piece over a certain weight is American pottery–it is the relationship between the size and the weight that helps determine the country of origin.Occasionally the base markings of a base may be obscured by the glaze.Later, they marked the base with the text Scheurich-Keramik.The bottom shows the name, if there is one, the color of the clay, the way the piece is fired, and other characteristics that help with the identification.If you're looking to identify a piece of marked pottery, you may want to check our American Pottery Marks and Resource Directory and compare the mark there. Since not all pottery is marked, the identification must be done with a little more resourcefulness. Most American pottery pieces have some weight to them–unlike the Japan imports of the 1940s, 1950s and 1960s that seem fairly light in comparison.Values are for general condition pieces with the usual scratches and rub marks associated with old pottery.
This page will explore known Van Briggle Pottery marks used by the company over the years.Many pieces were dated in the teens era from 1912 (scarce), 1913, 1914, 1915 to 1921. The clay color and finish changed a bit during the 1920's - 30's and even again in the 1940's to 1960's.Base Scheurich always used white clay and marks are almost exclusively moulded.Since new collectors or people who just pick up a random piece have no idea of all the names or styles RPG will list all Roseville pieces by their number.The numbers on the bottom of Roseville pottery represent a shape number and usually accompanied with another number representing the size normally in inches. 603-10) This guide represents the majority of Roseville pottery items with numbers.