This is an example of the bias cut edging used to finish the  side wings of a headdress dated to 1000-1163 (Liao Dynasty founded by the Khitans). The edging is made of blue silk gauze cut on bias and  attached around the curved sides of the wings. So far this is the first example for the use of bias tape of sort within SCA timeline.

All images were published in the catalog of Liao Dynasty items in the collection of the Abegg-Stiftung in  Riggisberg, Switzerland.

Schorta, R., Viràg, C. von., & Abegg-Stiftung. (2007). Dragons of silk, flowers of gold : a group of Liao-dynasty textiles at the Abegg-Stiftung. Riggisberg [Switzerland]: Abegg-Stiftung.