Watch List notes:

BUWAYHID: 10th/12th century, glass vessel stamp (4.77g), A-1585V, inscribed 'amal al-hasan ("by order of al-Hasan"), with the name probably intended to be 'ali below and symbolic "legend" around, light blue with touch of green in the center, translucent, nearly EF, RR. One example gives the additional legend "bin 'ali al-zajjaj", "son of 'Ali the glassmaker", sold in Myntauktioner i Sverige Auction 17, Lot 1521, originally from our Pricelist 85, Lot 82.

Estimate: 120-160 USD