Watch List notes:

Arab-Sasanian, 'Umara b. Tamim, drachm, SK (Sijistan) 84h, obv., in margin: bismillah – rabbi, 4.17g (SICA 1, p.34, note 194; Album C40 RRR; Wilkes 57 'Extremely rare'), good very fine, very rare (£500-700)