Abstract: A modular indicator of information relating to an article on display is provided. The indicator is made up of a plurality of display units which can be fixed each to the following other along a longitudinal axis of composition. Each display unit is made of a material translucent to light and configured in a substantially prismatic shape to gather incident tight into a first surface and reflect the incident light toward a front face of the display unit of a second surface in a direction substantially perpendicular to said front face.