Buwayhid, Mu'izz al-dawla (328-356h), Dirham, Tustar min al-Ahwaz 356h, citing Rukn al-dawla as overlord and 'Izz al-dawla as heir, 3.69g (Treadwell Tu356; A 1545). Some weakness in margins, otherwise about extremely fine, very rare.
Estimate: £80-100