A planar display assembly is provided with a pane with a front reflective surface and a rear surface. An array of mounting plates is provided, each with a first fastener, and a polygonal mounting plate adhered to the rear surface by an adhesive. A plurality of second fasteners is each engaged with one of the array of first fasteners for linear adjustment relative to the pane in a direction generally perpendicular to the pane to support the planar display assembly upon an upright support surface. Each mounting plate is oriented upon the pane rear surface such that at least one vertex extends away from the corresponding first fastener in a direction toward another sequential first fastener within the array of first fasteners. A metal bracket is adapted to be mounted to the upright support surface. The bracket has at least one enclosed cleat to receive two of the second fasteners.