An Islamic yellowish glass flask, Egypt or Syria, 9th-10th century, made in two parts, the lower part decorated with a tooled tong five times to create large medallions with central bosses, 13.8cm high Provenance: London art market since 2001. Note: Vessels bearing this type of decoration include wide, open-mouthed glasses like bowls or cups, to they maybe enclosed to form flasks (as in this case) or jugs with the addition of a second paraison of glass, which in the more elaborate examples can be of a second, contrasting colour as with a flask with a blue neck and shoulder from the Khalili Collection (S.M. Goldstein Glass, The Nasser D. Khalili Collection of Islamic Art, Vol. XV, London 2005, pp. 90-1, no. 96).Some iridescence, strain crack in the neck