Watch List notes:

ISLAMIC, Yemen. al-Mansur 'Umar I, 626-647 AH / 1229-1249 AD. Dirham (Silver, 23 mm, 1.89 g, 7 h), al-Dumluwa mint, AH 645 / 1247 AD. Album 1100.4. Nützel 18. Very rare mint. Nicely toned and well struck. Good very fine.