Dating
640–656 AH (= AD 1242–1259)
Obverse
لا اله الا / الله محمد / رسول / الله, Circle within single linear triangle, three dots in each angle, Arabic inscription anti-clockwise in segments on three sides beginning at 6h and last word of inscription in margin, all enclosed by linear circle
Reverse
الامام / المستعصم / بالله امير / المؤمنين, Circle within single linear triangle, three dots in each angle, Arabic inscription beginning in centre and then continuing anti-clockwise in segments on three sides beginning at 130h, all enclosed by linear circle