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A hardstone intaglio ring, possibly Sassanian, 3rd-7th century AD or later, designed as a drilled
A hardstone intaglio ring, possibly Sassanian, 3rd-7th century AD or later, designed as a drilled disc-shaped hardstone bead, each side carved in intaglio to depict a lion and a winged lion, swivel-set in a later gold ring mount, size U, intaglio 2.1cm diameter