40008943, Edinburgh Tassie, 2939, A YOUNG WARRIOR (JASON?) IN FRONT OF A COLUMN ENTWINED WITH A SNAKE. A RAM'S HEAD (THE GOLDEN FLEECE?) AT HIS FEET. A BIRD ON TOP OF THE COLUMN., Townley, (Mr. Charles), Fitzwilliam Manuscript Catalogue, Unpublished Tassie, x2, Cornelian