Secure document comprising: - a metal layer including an arrangement of diffractive nanostructures, the diffractive nanostructures being disposed periodically in the metal layer so as to form a diffractive holographic structure; - a lenticular array comprising convergent lenses positioned facing the metal layer; and - a support layer on which the metal layer is disposed so that said metal layer is interposed between the lenticular array and the support layer; wherein the metal layer comprises perforations formed by focusing a laser radiation through the lenticular array onto the metal layer, the perforations comprising at least one group of perforations (201; 202) produced by focusing the laser radiation at a respective angle of incidence (θ) so as to reveal a corresponding personalized image when the secure document is observed at said angle of incidence, wherein the holographic structure, formed by the diffractive nanostructures of the metal layer, forms an arrangement of pixels each including a plurality of subpixels of distinct colors, the perforations revealing, under observation, locally through the holographic structure, color or gray-level shades caused by underlying regions of the support layer located facing the perforations, the underlying regions modifying the colorimetric contribution of the subpixels. - a metal layer including an arrangement of diffractive nanostructures, the diffractive nanostructures being disposed periodically in the metal layer so as to form a diffractive holographic structure; - a lenticular array comprising convergent lenses positioned facing the metal layer; and - a support layer on which the metal layer is disposed so that said metal layer is interposed between the lenticular array and the support layer; wherein the metal layer comprises perforations formed by focusing a laser radiation through the lenticular array onto the metal layer, the perforations comprising at least one group of perforations (201; 202) produced by focusing the laser radiation at a respective angle of incidence (θ) so as to reveal a corresponding personalized image when the secure document is observed at said angle of incidence, wherein the holographic structure, formed by the diffractive nanostructures of the metal layer, forms an arrangement of pixels each including a plurality of subpixels of distinct colors, the perforations revealing, under observation, locally through the holographic structure, color or gray-level shades caused by underlying regions of the support layer located facing the perforations, the underlying regions modifying the colorimetric contribution of the subpixels. wherein the metal layer comprises perforations formed by focusing a laser radiation through the lenticular array onto the metal layer, the perforations comprising at least one group of perforations (201; 202) produced by focusing the laser radiation at a respective angle of incidence (θ) so as to reveal a corresponding personalized image when the secure document is observed at said angle of incidence, wherein the holographic structure, formed by the diffractive nanostructures of the metal layer, forms an arrangement of pixels each including a plurality of subpixels of distinct colors, the perforations revealing, under observation, locally through the holographic structure, color or gray-level shades caused by underlying regions of the support layer located facing the perforations, the underlying regions modifying the colorimetric contribution of the subpixels.