A green-glazed flask of similar Liao date and size, surmounted by two similar figures and decorated with a similar carved, rather than applied floral medallion, found in 1977 in Pingquan county, Hebei province, is illustrated in Quanguo chutu wenwu zhenpinxuan, 1976 - 1984, Wenwu Chubanshe, 1987, pls. 60 and 61. One without the medallions is illustrated in Selected Chinese Ceramics from Han to Qing Dynasties, Chang Foundation, Taipei, 1990, no. 20. See, also, the green-glazed flask with similar naked figures, from the Hardy Collection of Early Chinese Ceramics and Works of Art from the Sze Yuan Tang, sold at Christie's New York, 21 September 1995, lot 100.