An adjustable retaining bracket for securing a display panel to a stationary object. The invention provides a retaining bracket having a latching arm, with a rounded nose, pivotally connected to the bracket. The latching arm engages a corresponding latching pin located on a support arm. The support arm is secured to a display panel and pivotally attached to the mounting bracket using bolts. The invention is then secured to the existing store shelving using nuts and bolts. The latching arm contains at least one detent and is used to retain the display panel at a variety of viewing angles depending upon which detent engages the latching pin. When the display panel is rotated counterclockwise (toward the store shelving), the latching pin of the support arm engages the rounded nose of the latching arm, raises the arm and comes to rest in a detent position. Further movement of the sign will move the sign to the next detent position (if available). Rotation of the panel in the opposite direction will disengage the securing latch and allow the sign to swing freely to a downward vertical position.