ISLAMIC. The Coinage of Yemen. Rasulids, al-Nāṣir Ṣalāh ad-Dīn Aḥmad, (AH 803-827 / AD 1400-1424), Dirham ND, no mint (al-Mahjam). Condition: Extremely fine. Weight: 1.71 g. Diameter: 28 mm.