Watch List notes:

ABBASID: 'Ali b. Sulayman, governor of Egypt, 786-787, glass vessel stamp (2.17g), A-338U, B-585, the full text is bism Allah / al-amir 'ali / bin sulayman akr- / -amahu Allah qist, of which the top line and part of the 4th line are off, EF, R. Surviving vessel stamps are almost invariably broken, when removed from the sealed jug.

Estimate: 150-200 USD