Watch List notes:

Mutawakkilite Imams of the Yemen, Ahmad b. Yahya (1367-1381h), gold riyal Ahmadi (4 sovereigns), Dar al-Khilafa San'a 1373h, rev., value '4' punched below third crescent, 31.91g (KM G17.1 [this type only listed for 1371 and 1372h), edge damaged at top and bottom where a mount has been removed, otherwise very fine or better and very rare. Ex Spink auction 11009, 22-23 June 2011, lot 237. (£1800-2200)