Watch List notes:

RASULID: al-Afdal al-'Abbas, 1363-1376, AR dirham (1.89g), Ta'izz, AH777, A-1109.2, seated man above obverse field, al-Afdal maintained the mint at Tha'bat until sometime during AH777, then relocated the mint to the old city of Ta'izz (about 5 km from Tha'bat), extremely rare mint for this reign, confirmed by this piece and the example in the Tübingen collection, superb strike, choice EF, RRR. Ta'izz is not yet listed on Zeno as one of the mints of al-Afdal al-'Abbas!

Estimate: 150-200 USD