Kufic and Bukharan legends around bust, crowned Sasanian-style bust right / Fire altar with ribbons and attendants; crowned bust left in flames. Imitating Sasanian king Bahram V. 25mm, 2.81 grams. BM Arab-Sassanian coins #344 ff.Rare (much rarer than the related type naming Caliph Mahdi). Al-Amin was the son of the famous Harun a-Rashid.