Security device for rotatably mounting an article to a surface

A security device for rotatably mounting an article to a surface, said device comprising:

• a base member having a face, a center, and a downwardly facing bearing surface around its periphery;
• a clasp member comprising a first part having a cover, an inside bounding wall, and an underlying flange at an elevation below said bounding wall, which flange includes a semi-circular bight and a pair of arms, said bight including an upwardly facing bearing surface which engages said bearing surface of said base member, said arms including a pair of slots which intersect the region between the bight and the cover, and a second part having a pair of tongues which are engagable and slidable in said slots, and a curved flange having an upwardly facing bearing surface, said last named bearing surface, when said tongues are engaged in said slots, engaging said downwardly facing bearing surface of said base member;
• lock means for releasably holding the two clasp parts together;
• and
• spacing attachment means fixed to said face of said base member for mounting said base member to said surface and spacing its bearing surface therefrom, whereby with the base member mounted to the surface, said clasp member parts can be slid together with the bearing surface of the base member rotatably engaged by the bearing surface of the clasp member parts, and the lock means locked to hold said clasp member parts together, an article being attachable to said cover.