BAVANDID OF TABARISTAN: Rustam b. Sharwin, 964-980, AR dirham (3.80g), Firrim, AH363, A-1524, citing the Buwayhid ruler Rukn al-Dawla as overlord, and with the Shi'ite kalima in the reverse field, EF, R. Also citing the Abbasid caliph al-Muti', despite the Shi'ite preference of the Bavandids under Rustam.
Estimate: 180-220 USD