TABARISTAN: 'Abd Allah b. 'Arif, 792, AR 1/2 dirham (1.62g), Tabaristan, AH141, A-70B, Malek-134, with the name 'abd Allah before the bust and the patronymic bin 'arif in the 3rd quadrant of the obverse margin; some spots of light porosity, still very attractive and extremely rare, VF-XF, RRR. Only 2 examples on CoinArchives, but none of this exact type (both with the full name 'Abd Allah bin 'Arif before the bust).

Estimate: USD 800 - 1000