Dated Roman Egypt Alexandria Empress Tranquillina (wife of Emperor Gordian III) billon tetradrachm coin, 11.72g.
NGC Certified authentic to Ch XF, Strike 5/5, Surface 3/5 (high grade).
Issued in Gordian III's 6th regnal year Greek letter S = 242/3 CE.
Emmett 3440/6, rated as R3 (very rare).
Obverse: Draped bust of empress facing right.
Reverse: Athena seated left holding Nike (Victory) and spear.