14.5mm, 3.16gm.

be-qovvat-e aferidegar-e 'alam, "by the power of the Creator of the world"/ citing the caliph al Mustansir on the reverse, Album 1978K, ZENO #123963, Nyamaa 9.  Good very fine, Rare.

 

NOTE: 

Inscribed on the obverse in Persian, be-qovvat-e aferidegar-e 'alam, "by the power of the Creator of the world", and citing the caliph al-Mustansir (623-640) on the reverse. One of the earliest Islamic precious metal coins with legends inscribed in the Persian language.