There are several sub-tribes of the Bakongo that make pots with a distinctive marbled finish. The tribes are located along the area of the Congo River known as the cataracts below the Malebo, previously Stanley Pool. There are variations in form and finish between groups but this particular shape with its handsome rounded body, tall flared neck and rimmed foot is associated with the Sundi.
The marbled finish is created after firing by treating the red hot pots with a decoction made from a plant called bridelia ferruginea. The solution boils off the hot pot creating the distinctive pattern and making the pot less porous. This example has additional incised decoration.