This very well preserved large bottle has a most unusually shaped mouth. A very comparable mouth on a bottle made of similar pale yellow glass was sold in these Rooms 1 May 2001, lot 309. The body of that bottle was moulded with panels of triangular and scrolling motifs. A jar with similarly shaped body but with much wider neck was found at Fustat in a site which can be fairly precisely dated to the 7th/8th century. A smaller bottle with mouth which approaches the present thick rounded form is now in the Museum of Islamic Art in Cairo (Schätze der Kalifen, exhibition catalogue, Milan and Vienna, 1998, no.176, pp.195 and 197).