SOTHEBY PARKE BERNET A.G.- Zurich, 10 – June, 1977. Catalogue of ancient coins the property of the estate of the late MRS. Greta S. Heckett and other awners renaissance medals and continental coins. Nn. 436, tavv. 15 b\n + 1 a colori. ril. editoriale, buono stato, lista prezzi Val. e Agg. Spring, 846.