Egypt, Alexandria. Julia Mamaea, mother of Severus Alexander 222-235. Tetradrachm (Billon, 24.06 mm, 12.04 g). Dated RY 12 = AD 232/3. IOY MAMAIA CЄB MHTЄ CЄB K C TP Diademed and draped bust of Julia Mamea right. Rev. Isis bust right, wearing basileion and Isiac knot on chest; before, palm frond and behind L IB (date) in field. Dattari 4495 (this specimen). Emmett 3211 (4). Very rare. Attractive portraits. Good Very Fine. Ex Giovanni Dattari Collection, Il Cairo. Ex Giuseppe Nascia, Milano. Ex Athos Moretti Collection, Bellinzona. Specimen purchased in May 1987. Elegant and rare tetradrachm of the August Julia Mamea, mother of Severus Alexander, from the prestigious collection of Giovanni Dattari and of impeccable mintage with high relief and perfect centring as well as superb conservation. Noble and serene is the portrait of the empress mother and delicate the image of the placid Isis, the major Egyptian female divinity.