For a very similar group in white jade from the Alan and Simone Hartman Collection, see Knapton Rasti Asian Art, 'Ceramics and Works of Art', November 2008, no. 51, pp. 54-5 and also published in Kleiner, Robert, 'Chinese Jades from the Collection of Alan and Simone Hartman', no. 183; and for another similar example in pale green jade, see Morgan, Brian and John Ayres, Dr. Newton’s Zoo, 'A Study of Post-Archaic Small Jade Carvings', no. 97.
Private American collection