200001261, Tassie, 1261, TWO HORSEMEN (DIOSCURI - DANUBE HORSEMEN) WITH SPEARS, WEARING PERSIAN CAPS AND CLOAKS, FACING ISIS, PROSTRATE FIGURES UNDERNEATH THE HORSES, TWO LAMPS AND SNAKES IN THE FIELD ABOVE, HARPOCRATES AT THE SIDE,THREE CUPS BELOW THE GROUNDLINE., Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), Tassie, J.; Raspe, R.E.: A Descriptive Catalogue of a General Collection of Ancient and Modern Engraved Gems,... (1791), NO. 290