Globular bowls of this type were known as pure water bowls, jingshuiwan, and were used in Buddhist rituals as vessels containing sacred water used to purify the heart.
A number of examples exist in private and museum collections including one in the National Palace Museum, Taipei, illustrated in Catalogue of the Special Exhibition of Selected Hsuan-te Imperial Porcelains of the Ming Dynasty, National Palace Museum, Taipei, 1998, pp. 60-61; and another is illustrated in Chinese Ceramics in the Idemitsu Collection, Tokyo, 1987, pl. 636.
Compare also an example from the Percival David Collection sold at Christie's Hong Kong, 29 May 2007, lot 1351, and another from the E.T. Chow Collection sold at Sotheby's Hong Kong, 19 May 1981, lot 402.