A GROUP OF EIGHTEEN GRAECO-ROMAN GLASS BUTTON BEADS OR 'SPINDLE WHORLS', including one of green glass with yellow opaque cross and circle decoration, two with opaque marvered feather patterns, four with multicoloured iridescence, and others with spiral pattern, 4th Century B.C./A.D., 1¼in. (3.3cm.) diam. max., in presentation box (18)