Watch List notes:

Yemen. al-Nasir Ahmad b. Yahya (Imam Ahmad). AH 1382. AR 1/2 ahmadi riyal (29 mm, 13.18 g). San'a. Double crescent below accession date AH1367 / Full dates; denomination and mint name read outward. KM Y-16.2. Brilliant uncirculated. 

From the Estate of Benjamin R. Bell.