OPTICAL LAYERED PRODUCT, METHOD FOR DETERMINING AUTHENTICITY THEREOF, AND ARTICLE

An optical layered body comprising a polarized light separation layer and a first display layer, wherein: the polarized light separation layer includes a plurality of reflective layers containing a resin having cholesteric regularity; the plurality of reflective layers each have a polarized light reflection wavelength range in which the reflective layer can reflect circularly polarized light having one rotation direction DA and transmit circularly polarized light having a rotation direction opposite to the one rotation direction DA; the first display layer contains a resin having cholesteric regularity; and the first display layer has a first display wavelength range in which the first display layer can reflect circularly polarized light having a rotation direction DB1 which is the same as the rotation direction DA and transmit circularly polarized light having a rotation direction opposite to the rotation direction Dai.