Abstract: A security device for rotatably mounting an article to a surface. The device includes a base with a face, a center, and a peripheral rail having a downwardly facing bearing surface. It is mountable to a surface by an adhesive member having a dimension of thickness which spaces the base from the surface. A clasp comprises two parts which can be slid together whereby to provide bearing surfaces to hold the clasp rotatably to the base member. The clasp member includes a cover to which articles can be attached, such as adhesively or by bolting. Lock means is provided for releasably engaging the two clasp parts.