ISLAMIC, Persia (Pre-Seljuq). Samanids. Nasr II ibn Ahmad, AH 301-331 / AD 914-943. Dirham (Silver, 28 mm, 3.63 g, 5 h), citing the Abbasid caliph al-Muqtadir billah, Balkh, AH 312 = AD 924/5. Album 1446. Beautiful iridescent toning. Struck from worn dies, otherwise, very fine.
From a Swiss collection of Islamic coins, assembled in the 1970-1980s (with original flip with S. Album's description).