Colorless; transparent red and translucent charcoal gray canes or appliqués; canes or appliqués preformed; vessels flameworked. Bowl: conical with undulating, roughly oval mouth. Rim slightly thickened and rounded; wall tapers and straightens just above bottom; plain base, concave underneath. Decorated with canes or appliqués with alternating red and gray stripes, manipulated into intricate "marbled" pattern consisting mainly of concentric spirals; two rectangular red and gray areas extend from below rim to just above bottom of wall on opposite sides of vessel, their upper and lower edges extended around circumference until the meet, making two unbroken horizontal bands; on one side of vessel, colorless wall has small nipple-like protrusion. Signature on underside of base: "HK" monogram, lampworked in colorless glass in low relief.