Colorless, with brown inclusions; blown and cased, with diaphanous, ribbon-like inclusions in outer layer; cut, sandblasted, and acid-polished. Bottle, with three-sided body which is wider at bottom than at top. Rim outsplayed, with rounded lip; short, cylindrical neck, which splays at bottom and merges with straight, splayed wall; base plain, with flat bottom. Interior is narrow, with constriction at junction of neck and body. Lower part of wall decorated with ribbon-like inclusions, some of which are wrapped around body and others have irregular folds. Final shape imparted by cutting; sides and base flattened, angles at junctions of sides removed, and junctions of sides and base chamfered. All exterior surfaces except top of rim finished by sandblasting and acid-polishing. Acid-stamped signature and mark on bottom: "83y" and "663/12".