200000602, Tassie, 602, OUROBOROS WITH CHARACTERES AND MAGICAL INSCRIPTION., Stosch, (Philipp, Baron), Tassie, J.; Raspe, R.E.: A Descriptive Catalogue of a General Collection of Ancient and Modern Engraved Gems,... (1791), 59,NO.600,TRAY 10.1, 10.3, Sulphur