Transparent light blue glass with greenish streaks; many bubbles; blown, tooled. Rim outsplayed, folded outward, downward and inward; drooping tubular flange at junction of rim and body; wall splays and then curves inward toward bottom; at center of base, low kick, edges of which appear to have been smoothed by grinding. On lower part of body, fifteen narrow vertical ribs more or less evenly spaced, apparently formed by tooling.