This textile appears to be identical in pattern and construction to a fragment in the David Collection, Copenhagen, Collection No 20.1994. The David Collection's textile also has two types of gold thread, the first wrapped around a silk core, the second gilt animal substrate. The textile also carries a woven dedication to Abu Bakr bin Saad, which is thought to refer to the Salghurid ruler of Fars (1231-1260). Both textiles appear to be not of Farsi manufacture, but are more likely to have been woven in Central Asia.
The David Collection's textile is discussed at some length in 'When Silk was Gold', by James Watt and Anne E Wardwell in the chapter headed "Luxury Silk Weaving under the Mongols"