Although this vessel was discovered at ancient Borsippa in southern Mesopotamia, its form and decoration suggest that it may be an import from central Mesopotamia where this type of pottery was more common. It is decorated with stamped designs, and is therefore typical of pottery found at Late Sasanian settlements. This commonly included large or medium-sized jars impressed around the outside with wooden stamps. Many of the dies were circular, and we know they were carved from wood as the grain of the dies themselves are sometimes visible on impressed surfaces. A small number of square stamps were also used, and one such was used to decorate this vessel. Some of the square stamps have animal and geometric motifs also typical of Sasanian art on stucco, metalwork and seals. Analysis of the distribution and style of various stamps suggests several regional ceramic production centres. Indeed during the Sasanian period large industrial sites dedicated to pottery and glass manufacture developed next to canals in central and southern Mesopotamia. Excavations have revealed square kilns measuring over four metres across.