ROMAN SOLID GLASS BICONICAL STOPPER Ca. AD 200 - 300. A dark green glass stopper with a biconical shape, tapering symmetrically to concave points at both ends, used for sealing vessels. For similar see: Sir Henry Wellcome's Museum Collection, Object Number: A628500, Bonhams, Antiquities, 4 July 2024, Lot 192. Size: 95mm x 65mm; Weight: 310g Provenance: Private UK collection; previously acquired on the Holland art market in the 1990s.