Glass ribbed bowl 1st century B.C. Greek, Eastern Mediterranean Translucent dark yellow green.Slightly inverted rim with angular top edge; sides curving in to broad, flat bottom.On interior, a band of four horizontal grooves, arranged vertically in two pairs, cut on upper half of side; on exterior, thirty-one diagonal ribs of varying width and thickness, some extending almost to the bottom of the side, with irregular rounded tops.Intact; some pinprick bubbles; dulling on interior and around plain band below rim on exterior; some patches of slight iridescence and weathering, and one large area on exterior of encrusted limy weathering.Rotary grinding marks on interior.Greenish ribbed cup, cut bands inside.. Glass ribbed bowl. Greek, Eastern Mediterranean. 1st century B.C.. Glass; cast, tooled, and cut. Late Hellenistic. Glass