Large "Mezza filigrana" bowl by Barovier & Toso Round, spherical moulded shape on a small foot. Colourless, thin-walled glass with "Mezza filigrana" decoration of fused, fine, red, concentric glass threads spiralling towards the centre, a delicate, white glass thread on the rim. Diamond-carved, three-line mark "barovier & toso murano". D. 33 cm. A large Italian Murano "Mezza filigrana" glass bowl by Barovier & Toso. Engraved three-line mark "barovier & toso murano". Italy. Murano. Barovier & Toso. 1970s/1980s.