Fig. 1From: A transparent dialogue between iconography and chemical characterisation: a set of foreign stained glasses in Portugal( Photograph credits ©PSML—Luís Pavão)Photographs of the panels under study: (left) Saint Ambrose (PNP2821), (middle) Virgin of the Apocalypse (PNP2822), and (right) Saint Gregory (PNP2809). Bellow, details of the faces of the depicted figuresBack to article page