This pottery mark is 1897 Rookwood with artist’s initials LNL (upside down) for Elizabeth Lincoln.

This shield mark is from the Conta and Boehme Porcelain Factory in Germany - c. 1840.

This mark is from the MWG Westerwalder Neukeramik Factory in Germany circa 1904.  The vase sold for $500.

This Rookwood mark is dated XII or 1912.  The C.S.T stands for  artist Charles Stewart Todd.

xxx

The mark shown is a Square Ink Stamp “Keramis made in Belgium” mark.

The Artist signature mark “Ch. Catteau” for Charles Catteau (1880-1966) and D-943 for the Design.

The original store label reads “Ovingtons New York” and 91-363 written in ink.

The vase that had this mark sold for $800.

From 1901-1903, Van Briggle used incised Roman numerals into the base of their pottery.  Roman numerals I, II, or III indicated the type of clay used.

xx

From 1930-1937 Roseville used gold or silver paper stickers that said Roseville Pottery with a “v” within a capital “R”. Many of these paper stickers were lost over the years, leaving the pieces unmarked.

Paul E. Cox. was a master potter and very talented glazer who operated his own shop in New Orleans. He worked at Newcomb College from 1910 to 1918 - with the objective of growing the talent  so they could compete with other leading pottery companies like Roseville, Weller, and Rookwood.

xx

Grueby (1894 -1909)  American Art Pottery is among the most sought after pottery by Arts and Crafts collectors.

This mark is the Impressed Grueby Leaf Logo and Grueby Pottery Boston U.S.A. circular mark. “ER” is incised for the Grueby Artist Ruth Erickson who threw and decorated this piece. The numbers “5/7″ incised into the bottom most likely means that the  bowl was made, May of 1905.

xx

Rookwood(1880 - 1967)  is known as one of the premier American Art Pottery companies.  These pieces were made in limited quantities and are of very high quality.  Prices range from around $100 for the later pieces to >$10,000 for the earier high quality pieces.

The most expensive Rookwood piece sold at auction in 1991 for $198,000 for a 1900’s vase by Shirayamadani decorated with an electroplated fish swimming under a sea-green glaze.

This Rookwood mark is is from 1914, signified by the roman numerals XIV.  The form mark is 1664.