Roger Dubuis Curvex Observatory Limited Edition 18Kt WG Wristwatch. The watch features an over-sized rectangular curved 18Kt WG case with a cut-out exhibition back secured with eight screws embossed "Roger Dubuis Horloger Genevois 12/28". The watch measures 56.00MM x 34.00MM without the crown and 36.30MM including the WG crown. The watch has a matte silvered bail signed ROGER DUBUIS Bulletin Observatory, black Roman numerals, blued steel spade and lozenge hands, domed rectangular case, case back with central exposition crystal center affixed with eight screws, High grade Swiss Cal. 57 self-winding 25 jewel Roger Dubuis rhodium plated movement with openwork rotor, fausses côtes finish, signed ROGER DUBUIS.  It is attached to a black crocodile strap terminating with a 18Kt WG tang buckle.