Abstract: An alpha-numeric display arrangement, designed to be vandal-proof, has an opaque mould plate mounted on the reverse of a metal front plate. Elongate apertures in the front plate each form one of a plurality of segments of the alpha-numeric display. Elongate apertures in the mould plate are each accurately aligned with a respective one of the apertures in the front plate. Molten transparent material is introduced to a required level in each of the contiguous aperture pairs. A space is left above the solidified material in which a light emitting diode mounted on a lighting board is received. Thus, each of the apertures is provided with a light emitting diode which is in optical communication with the transparent material provided within each of the apertures.