'Abbasids
al-Mahdî, 158-169 H/775-786 AD Dinar 169 H, no mint (probably Baghdad), marks: a dot below the letter bâ'in duriba and below the letter sîn in the word tis'a in the rev. margin, the marginal circle interrupted on both sides by seven small triangles at approximately equal distance. Bernardi 51; Lowick/Savage 348. 4.23 g.; Very fine