This paper presents the technology of the metallic threads used in the textiles of the Middle Ages trough the study of an embroidery fragment preserved in the Museo Nacional de Artes Decorativas. The origin and the development of the metallic threads technology are explained. including the different metals and alloys used. The paper also studies the questions related with the provenan... https://chefesquipmenters.shop/product-category/toilet-seat-covers/