English, 17th century and later | Two Agateware Tankards

Cups and Vessels from an English Kunstkammer English, 17th century and later  Two Agateware Tankards one struck on the base with maker’s mark MG within a shield and inscribed: I S glazed earthenware (possibly 17th century), with 17th century and later silver mounts 14.5cm., 5¾in. and 12cm., 4¾in.