10th or 11th century AD
copper alloy, cast, with engraved decoration and openwork thumbpiece
The shape is a modification of a Sasanian type [see MTW 455]. It has fine incised surface decoration of foliate bands and medallions and benedictory inscriptions.
J.M. Rogers, The Arts of Islam. Masterpieces from the Khalili Collection, London 2010, cat.18, p.43.