A Romano Egyptian ‘Cotton Reel’ unguentarium in thick cast mottled teal coloured glass. The flask has a wide everted flat rim, with a relatively tall neck and stands on a flat base.
The shape of this unguentarium seems to be characteristic of Roman Egypt, the thick walls creating a durable container with a very small capacity.
Circa 1st century AD.
For similar: cf. Item 50.1836: Ancient Glass at the Newark Museum (USA).