3rd-5th century A.D. A mould blown glass flask with a broadly piriform body, flared neck and rolled lip, formed as the head of Janus with two faces, detailing to the curly hair and stylised faces, one face wearing an aggrieved expression, the other a serene one; iridescent surfaces. 19.8 grams, 72 mm high (2 3/4 in.). Collection of a deceased London gentleman, 1969-1999.