Watch List notes:

CRUSADER IMITATIONS OF ARABIC COINS. ISLAMIC AND OTHER COINS AND WEIGHTS. ZIYADIDS OF THE YAMAN. al-Muzaffar ibn 'Alî, uncertain dates approximately between 370 and 420 H. Dinar 418 H. (frozen date), Zabîd. SICA 10, 142; Peli 26.5. 2.41 g.
Very fine