Watch List notes:

ISLAMIC, Umayyad Caliphate. Late 7th-early 8th centurie. Glass Vessel Stamp (36mm, 10.52 g). Winged horse (al-Buraq) right; bismillah in Arabic to upper left / Blank with typical 'gather'. Cf. Album 27, lot 117 (for a similar example). As made, traces of earthen deposits, some iridescence and chipping. Very rare.