200001198, Tassie, 1198, LEDA CROUCHING, HER CLOAK BILLOWING OVER HER HEAD, ATTACKED BY THE SWAN, GROUNDLINE., Stosch, (Philipp, Baron), Tassie, J.; Raspe, R.E.: A Descriptive Catalogue of a General Collection of Ancient and Modern Engraved Gems,... (1791), 105,NO.1198,TRAY 20.1, 20.3, Sulphur