Abbasid, al-Mu‘tadid (279-289h), dinar, Nisibin 282h, struck from dirham dies on which the mint-name has been re-engraved, rev., without border around field, pellets to left and right, 4.09g (Bernardi 211Hg, citing a single specimen of this mint and date), good very fine and extremely rare

Estimate: GBP 2000 - 3000