Jug or 'Jacobakan'; Ribbed; narrow jug (Jacobakan) of stoneware on a wavy foot with an egg-shaped body and long neck. The C-shaped ear is attached to the neck. The jug is decorated with rotating rings and a profile on the shoulder. Attached to the ear a 19th century silver frame with lid. Engraved here is Jacoba van Beyeren; 'VROV IACOB'; with a coat of arms and the edge lettering 'RYS.HOECK.VROV.IACOB.IS.GEEN.BASTERT'. Siegburg; Jacoba van Beieren (Countess of Holland; Zeeland and Hainaut); anonymous; Siegburg; c. 1450 - c. 1550; stoneware; glaze; montuur; vitrification; h 23.3 cm