Abstract: A security support for display article, in particular wrist-watches, designed to be integrated in a display unit includes a sensor fixed on the base and connected by a conductor were to a connector linked to an alarm central station. The support consists of a globally cylindrical block whereof the side surface is truncated along a chord to form a plane whereon is fixedly mounted a mechanical locking member adapted to co-operate removably with corresponding parts of the sensor fixed at the base of the watch, such that the latter thus equipped with the sensor, can be mechanically locked on the cylindrical block by the locking member and can be locked on that same block by winding of its own bracelet and by closure of its clasp.