St Helen's Mill pottery tankard by studio potter Cyril Braunton - Abingdon - on - Thames, Oxfordshire UK. Excellent site by Antique-Marks / English language Site by Perfect Pieces / English language Hold the piece up to natural light and closely examine the entire surface until you find the mark. Identification. Put simply, these ceramics had a single use. Take the piece of paper to your local library and look up the mark in a dictionary of pottery marks, such as "Kovels' New Dictionary of Marks: Pottery and Porcelain," "Lehner's Encyclopedia Of US Marks On Pottery, Porcelain Clay" or the "Pictorial Guide To Pottery And Porcelain Marks.". Pottery marks are often placed on the bottom or inside of a piece, so you might need a flashlight to view them. Site by Perfectpieces / English language Pottery marks are small insignias that are engraved, embossed or painted into a piece of pottery to identify the artist or company that produced the piece. Green / English language Pottery bearing the mark of the British Royal Arms indicates that it was created since the 19th century. Share. Signatures are carved by hand, sometimes painted. DUE TO A PREPONDERANCE OF QUESTIONS BEGINNING WITH "IS THIS BITOSSI?" A factory mark is a symbolic marking affixed by manufacturers on their productions in order to authenticate them. Share with: Link: Copy link. Excellent site by Asiatic Pheasants including many Wedgwood marks / English language, DUCHESS, BURGESS and LEIGH Inclusions – often incorporated naturally into the clay (e.g. Good site by Perfect Pieces / English language Pottery marks identification (a tricky task at the best of times) just got easier - with a little help from your friends! Porcelain., WEDGWOOD - individually selected for inclusion,