Prendeville, J.: Explanatory catalogue of the proof-impressions of the antique gems possessed by the late Prince Poniatowski and now in the possession of John Tyrrell, Esq. (1841): 91
Private Collection
Comments: The gem is not listed in the 1839 Christie's sale catalogue - probably it was thought it duplicated the previous entry (T90, lot 355). The sale is undoubtedly the source in which it was acquired by Tyrrell.