The inscriptions read: ... al-yumn wa al-zafar ma tala'a al-sham[s] ... ' (... Good-fortune and Victory as long as the Sun rises ....)
This pair of vases copies a form that is known in metalwork, but very unusual in pottery. A lustre example with vertical ribs is in the Keir Collection (Ernst J. Grube, Islamic Pottery of the Eighth to the Fifteenth Century in the Keir Collection, London, 1976, no.159, pp.216 and 219). In his discussion of the Keir example Professor Grube suggests that it might be unique. The present pair of vases are highly unusual not just in the fact that they are a pair, but also that they include the domed foot which is found on bronze examples. One other pair of much smaller turquoise glazed vases with splayed feet was sold at Sotheby's New York, 9 December 1980, lot 333.