A nearly identical biscuit spotted horse in the James E. Sowell Collection is illustrated by M. Cohen and W. Motley in Mandarin and Menagerie, Chinese and Japanese Export Ceramic Figures, Vol I: The James E. Sowell Collection, Surrey, 2008, pp. 188-89, no. 12.8, where the authors suggest that the inspiration for this horse is the "Black Jade Piebald Horse" given by the Tang dynasty General Tang Maozhong as tribute to Emperor Xianzong.
A pair of nearly identical horses, but with yellow-glazed tails and manes, on green leaf-form bases, is in The Copeland Collection, and is illustrated in W. Sargent, The Copeland Collection: Chinese and Japanese Ceramic Figures, 1991, pp. 64-5, no. 20. Another pair, from The Hodroff Collection, Part III, was sold at Christie's New York, 21 January 2009, lot 151.