Glazed in imitation of longquan celadon rather than guanyao, which appears to be more usual for the Qing copies of the Song prototypes. For a Song dynasty faceted hu of Xiuneisi guanyao type and of greenish tone, see the vase in the National Palace Museum, Taipei, included in the Special Exhibition of Sung Dynasty Kuan Ware, 1989, illustrated in the Catalogue, no. 15

Qing examples with a guan type glaze of similar size are in the Baur Collection, illustrated by Ayers in the Catalogue, vol. III, Geneva, 1972, no. A344; in the Percival David Foundation, Catalogue, Section 1, nos. A89 and 90; and in the National Palace Museum, Taipei, included in the Special Exhibition of Qing Monochromes, 1981, Catalogue, no. 89. Another with an uncrackled bluish-gray glaze of guan type in the Garner Collection was included in the O.C.S. exhibition, the Arts of the Ch'ing Dynasty, London, 1964, Catalogue, no. 276. Others with this same blue-gray glaze were included in the S Marchant & Son exhibition, Qing Mark and Period Monochrome and Two-Coloured Wares, London, June 7, 1992, Catalogue, no. 35 and in the exhibition, Important Chinese Ceramics from the Robert Chang Collection, Christie's, London, June 2-14, 1993, no. 57. Two other guan-type faceted hu, one with crackled glaze, one with uncrackled glaze are illustrated by Regina Krahl, Chinese Ceramics from the Meiyintang Collection, vol. 2, London, 1994, nos. 874 and 875