Silver hemidrachm of governor Mutaqil (789-790 CE), 138 PYE/789 CE, Caliph Harun al-Rashid, Abbasid Governors of Tabaristan

Sassanian-style bust right, with winged crown surmounted by star and crescent, crescents with stars, Pehlavi words GDE 'pzwty (combined to mean roughly "may kingship increase", left of bust), governor's name Mutaqil in arabic to the right, Pehlavi words NYKW ("Good" lower left) and APD ("Excellent" in lower right) // Fire altar with two attendants standing facing, crescents on their heads, mint name in Pehlavi (tpwlst'n for "Tabaristan") to the right, date written out in Pehlavi to the left (138 Post-Yazdegard Era = 789 CE). 23mm, 1.62 grams. Album #68; Numista #70134.

Coins are dated in the post-Yazdigerd era (PYE) calendar, PYE = AH - 34.