Watch List notes:

ABBASID: glass disk weight (31.41g), A-338U, B-675, 46mm, weight for one wuqiya, in the name of the governor of Egypt, 'Ali b. Yahya (al-Armani), 840-843 & 848-849, with the legend in a square (al-amir 'ali / bin yahya mawlà / amir al-mu 'minin / abqâhu Allah), with 4 incuse points around the square center, translucent green, EF, RRR. Balog knew of just one example, which he described as "unpublished", whence this is likely the second known example. The last phrase of the legend means "may God preserve him".

Estimate: 700-1,000 USD