Samples of coloured threads from this object have been taken and are being analysed as part of a collaboration between the V&A and the Spanish Research project "Caracterización de als producciones textiles de la Antigüedad Tardía y Edad Media temprana: tejidos coptos, sasánidas, bizantinos e hispanomusulmanes en las colecciones públicas españolas" ("Characterization of Late Antique and Early Medieval textile production: Coptic, Sasanian, Byzantine and Spanish Muslim textiles in Spanish national collections") (HAR2008-04161) directed by Dr Laura Rodríguez Peinado, Universidad Complutense de Madrid, Dpt. de Historia del Arte I (Medieval).