The authentication methods we use include X-rays, radiocarbon dating, paint pigment analyses, paper chemical analysis, multispectral photography, hyper resolution, ultraviolet, forensic signature examination, research in archives in Madrid, documentary research, provenance research, Morellian analyses, sales and exhibition searches since Goya's time, consistency checks, chronological placement and other techniques.

If you need an opinion about authenticity, a full authentication report, an appraisal of value, a Certificate of Authenticity (COA) or anything else related to a Goya painting, drawing or lithograph, please send us photos and dimensions of your artwork. We respond quickly.