Sasanian Kings.   Khusro II (591-628).     AR Drachm. AY (Eran-khvarrah-Shapur) mint, Year 4.   Obv.    Bust of Khusru II right, wearing mural crown.        Rev.   Fire altar flanked by two attendants; stars and crescent flanking flames.     Göbl type II/3.     4.1 g.   32 mm.          Good VF.