Enamel Plaque from the Altar Frontal of Saint Martin at Orense (Spain) , 1174-1213 (probably before 1188) . This almond-shaped enamel plaque depicts the half-length figure of an angel inscribed in a medallion. A nearly identical plaque in the cathedral treasury of St. Martin at Orense in Galicia (Northern Spain) suggests that this plaque once formed part of a large altar frontal commissioned by Bishop Alfonso of Orense (reigned 1174-1213). Fifty-three enameled plaques of this important ensemble are still preserved at the Cathedral of Orense. Others, including this one, were possiblu removed during the Napoleonic era.