An automatic tourbillon — an unusual combination, because the tourbillon exists to average out positional error while the automatic rotor adds mass and a winding train the cage must carry. The two ambitions pull against each other, and reconciling them is the reference's real content. What matters on examination: tourbillon cage running true; the rotor winding smoothly, since an automatic tourbillon feels its winding train more than a conventional watch does; case screws and material junctions; and Richard Mille service history. Confirmed through the desk. Maker: Richard Mille. Reference: RM7401. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.