1⁄40 Riyal - Ahmad Bronze, large 'Sanaa' and with 'Sana'

The Mutawakkilite Kingdom struck these fractional riyals under Imam Ahmad ibn Yahya, who ruled Yemen in near-total isolation — foreign advisors were rare, infrastructure minimal, and the monetary system deliberately insulated from outside influence. The large 'Sanaa' mint mark distinguishes this variety from related issues, with the additional 'Sana' inscription creating the classification split collectors rely on today. Ahmad's reign ended with his death in 1962, followed almost immediately by a coup that dissolved the Imamate entirely and plunged Yemen into civil war.