ISLAMIC, Time of the Rashidun. Yazdigerd type. AH 31-41 / AD 651-661. Drachm (Silver, 33 mm, 3.92 g, 7 h), Arab-Sasanian, Yazdgard type, SK (Sijistan), YE 20 = AH 31 = AD 651/2 (Frozen year). Draped bust resembling Khosrau II to right, wearing elaborate mural crown; behind head, AFZUT GDH ('may his kingship increase' in Pahlawi); before head, YZDKLTY ('Yazdgard' in Pahlawi); in outer margin, 'bism Allah' ('In the name of Allah' in Kufic). Rev. Fire altar with ribbons flanked by two attendants; in upper left field, six-pointed star; in upper right field, crescent; to left, date; to right, SK (name of the mint in Pahlawi). Album 6. SICA I, 353ff. Walker, Arab-Sassanian, p. 4, 3. Struck from a slightly worn and corroded obverse die, otherwise, extremely fine.