Antoninus Pius billon tetradrachm, Alexandria, Egypt. Obv: ANTWNINO CEBEYCEB, laureate, draped & cuirassed bust right Rev: Athena standing right resting on spear against which stands a shield and holding owl on outstretched left hand; L-K (Year 20) across fields. Milne 2320 Contributed by Dane, April, 2008.