Very nice light coloured Siegburg Proto Stoneware Rheinland Protostoneware cup Middle ages. Very small hole in the belly. Secure and with track and trace from the Netherlands. The item “Proto stoneware Cup. 12th century GERMAN POTTERY MEDIEVAL SIEGBURG” is in sale since Saturday, November 23, 2019. This item is in the category “Antiques\Antiquities\Other Antiquities”. The seller is “mammoet” and is located in Best. This item can be shipped worldwide.