Keith Christiansen examines the history and design of a fourteenth-century orphrey on a cope in the Hispanic Society in New York. Together with a related cope in the Museo Catedralicio in Segorbe, these orphreys can be shown to have formed part of a set of liturgical vestments intended for the Carthusian monastery at Vall de Crist founded by the son of King Pedro, Don Martin (1356–1410). Produced in Florence, they are examples of the prestige Florentine embroidery – opus florentinum – enjoyed throughout Europe, marketed by Florentine merchants such as Francesco di Marco Datini – the famous merchant of Prato – who had branches in Avignon, Majorca, Barcelona and Valencia.