For a discussion of the Official School of hard-stone carving, see Moss, Graham, Tsang, A Treasury of Chinese Snuff Bottles, Hong Kong, 1998, Volume 2, Part 1, pp. 206-207, no. 258, as well as Part 2, pp. 326-345, nos. 301-307 for examples from the school carved with horses.
In this example, a popular subject of the School is masterfully carved using the very dark inclusions. There is a very similar example, although carved with a different inscription, in the Victoria and Albert Museum, London, which is illustrated by H. White in Snuff Bottles from China, The Victoria and Albert Museum Collection, London, 1992, p. 53, plate 19 (3).