1 x LEGO DUPLO Knight's Castle Ship Cannon Holders Set Reddish Red Brown 4x4 Cannon Base Base For Pirate Circus 4864 7881 54849: Amazon.de: Toys & Games
LEGO 7881 Duplo Pirate Ship Set Parts Inventory and Instructions - LEGO Reference Guide
In set 7881-1 | Brickset: LEGO set guide and database