LATE ROMAN BLUE GLASS UNGUENTARIUM. Ca. AD 200 - 400. A cobalt blue glass bottle with a pear-shaped body tapering into a slender neck, which expands into a broad, flaring rim. Thin horizontal glass threads encircle the neck. Size: 80mm x 35mm; Weight: 45g Provenance: Ex. Russkin collection, formed in the 1980s. This item has been cleared against the Art Loss Register database and comes with a confirmation letter.