Russel,
Your links do work though. This is a Mettlach etched stonware stein. It comes in two sizes, The Roman numeral I is the 1,0 L size and the Roman numeral II is the 1/2 L size. The stein was designed by Heinrich Schlitt. Der Durstige Ritter is The Thirsty Knight, see Translations Illustrated in The Reading Room. The Beer Stein Library lists its value at $400 to $550 in mint condition. That is generally the price range in a stein auction catalog, which includes about 30% commission to the auction house. It will generally sell at the lower range or less on ebay. Prices on Mettlachs and other steins have fallen in recent years.
