Compare a Yuan jar of similar shape and design but larger in size excavated from the tomb of Yang he (1326-1395) and another excavated in the city of Huaian, Jiangsu province, both illustrated in Ye Peilan, Yuandai ciqi, Beijing, 1998, pls. 53 and 52. A third vase of related shape with a cloud collar on the shoulder in the Tianjin Municipal Museum, is included in Tianjin shi yishu bowuguan cang ci, Tianjin, 1993, pl. 69. See also a larger jar of related design sold at Christie's London, 6th June 1988, lot 149.