Opaque white over translucent dark blue; blown, cased; acid-dipped, cameo-carved, ground, polished. Rim everted, with rounded lip; cylindrical neck curving out to shoulder which has rounded profile; body tapers toward bottom; base flat. Handles start at neck with lozenge-shaped plates; vertical ridge on outer surface which has 7 overlapping V-shaped sections; lower ends attached to overlay at shoulder. Body decorated with frieze extending from level of lower handle attachments almost to lowest surviving part of body and divided into 2 equal parts (sides I and II) by masks of Pan which hang by their horns from lower attachments of handles. Each mask has flowing locks, bushy mustache, shaggy beard, eyes with pupils delineated, and open mouth showing teeth.