Value and / or security document

Value and / or security document for the high-speed verification, with an anti-Stokes luminophor which is in the form of small inorganic particles and so on value and / or security documents is close to the surface applied to the high-speed verification using NIR light excitation and detection carried the emission bands in the visible and NIR wavelength range, characterized in that the anti-Stokes luminophor a thulium-activated and ytterbium-codoped gadolinium of the composition (Gd (Gd