The shape, glaze and size of this vase are based on a Song dynasty prototype such as the longquan example later inscribed with a poem by the Emperor Qianlong, illustrated by Liu Liang-yu, A Survey of Chinese Ceramics: Sung Wares, Taiwan, 1991, vol. 2, p. 192.
A similar, but smaller (27.8cm.), Yongzheng-marked vase glazed in imitation of 'official kiln' ware (guanyao) was included in the exhibition, Chinese Ceramics of Eight Dynasties, National Museum of History, Taipei, 1987, p. 68 (bottom). See, also, another similar, but smaller (27.9cm.) vase, glazed in imitation of geyao, also illustrated by Liu Liang-yu, Ch'ing Official and Popular Wares, vol. 5, p. 97 (right).