AQ QOYUNLU: 'Uthman, 1378-1435, AR akçe (1.34g), NM, ND, A-2501, Eron-5685var, tamgha in center, royal legend around / muhammad in center, kalima around, some weakness, EF, RR. Mint name after duriba is perhaps an abbreviated form of erzincan.
Estimate: 90-110 USD