BAVANDID OF TABARISTAN: Rustam b. Sharwin, 964-980, AR dirham (4.86g), Firrîm, AH360, A-1524, ruler's name in the obverse marginal legend, between the mint name & the date; citing the Buwayhid overlord Rukn al-Dawla, with 'ali wali Allah below the reverse field, some adhesions around the rim, choice EF, S.
Estimate: 100-150 USD