40005248, Marlborough, 714, Frontal mask of an anguished old man., Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 714, Agate cabochon

[View larger image] [Add to photograph album]