Glass ribbed bowl late 1st century B.C.-mid 1st century A.D. Roman Translucent blue green.Vertical rim with rounded top edge; plain band sloping obliquely outward around top of sides, then bulging outward before curving in sharply to flat bottom.On interior, four concentric grooves: one just below rim, two in a band at junction of side and bottom, and one small, broader circle at center; on exterior, eighty-two short, close-set, and sharply defined vertical ribs of slightly varying length and width, with tops ground off, arranged around the bulging middle section of body.Intact, but several internal cracks around rim; few bubbles; large areas of iridescent creamy brown weathering.Rotary grinding marks on plain band around top of sides and on interior.. Glass ribbed bowl 245198