Islamic - Later Central Asia. SHAYBANID: Darwish Ahmad, ca. 1573-1579, AR tanka (4.47g) (Balkh), ND, A-A3005, Zeno-118328 (same obverse die, shows the full mint name Balkh), central obverse legend darwish ahmad bahadur khan, extremely rare ruler, VF, RRR. Only 1 example on Zeno, none on CoinArchives.