MASSIVE ROMAN SOLID GLASS BICONICAL STOPPER. Ca. AD 200 - 300. A translucent green glass stopper with a biconical shape, tapering symmetrically to concave points at both ends, used for sealing vessels. Mounted on a custom-made display stand. For similar see: Sir Henry Wellcome's Museum Collection, Object Number: A628500, Bonhams, Antiquities, 4 July 2024, Lot 192. Size: 160mm x 80mm; Weight: 530g Provenance: Prince collection, 1990s-2014; Ex. Private collection 1970s-1990s. This item has been cleared against the Art Loss Register database and comes with a confirmation letter.