Anatolia & al-Jazira (Post-Seljuk). Isfandiyars (Jandars). 'Adil ibn Ya'qub, circa AH 746-762 / AD 1345-1361. 1/2 Akçe (Silver, 12 mm, 0.80 g, 4 h), 2nd standard, Sinop, AH 751(?) = AD 1350/1. Within a square, ‘lā ilāha illā Allāh / Muḥammad / rasūl Allāh’ (‘There is no deity but Allah. Muhammad is the messenger of Allah’ in Arabic); around, the names of the four Rashidun Caliphs in Arabic: ‘Abūbakr / ʿUmar / ʿUthmān / ʿAlī’. Rev. Within a circle, ‘ḍarb / al-sulṭān al-aʿẓam / khallada Allāh mulkahū / Saynūb’ (‘The supreme sultan. May Allah perpetuate his kingdom. Struck in Sinop’ in Arabic); date formula in the margin, partly off flan. Album 1281. Rare. Some deposits, otherwise, very fine.