The shape of the present vase is very unusual, particularly in the wide everted mouth rim which is sometimes seen on pomegranate vases. However, no other vase of this form and with an imitation Song glaze appears to have been published. Nevertheless, there are certain elements on the present lot which compare to other known examples. The general hu shape is seen in another Yongzheng brown-glazed vase with handles, illustrated in The Complete Collection of Treasures of the Palace Museum, Monochrome Porcelain, vol. 37, Hong Kong, 1999, pl. 255; while the angular shoulders and studs may be compared to those on a celadon-glazed jar, also with a Yongzheng mark, illustrated by John Ayers, Chinese Ceramics in the Baur Collection, vol. 2, Geneva, 1999, pl. 282.