Omega Constellation Globemaster Co-Axial Master Chronometer Watch - 39 mm Sedna Gold Case - Fluted Bezel - Silvery Dial - Brown Leather Strap - 130.53.39.21.02.001 Cornflower black rubber clad screw-locked crown

black rubber clad screw-locked crown

exterior rail-track

sand-blasted 950 platinum Pie Pan dial is reminiscent of the first 1952 Constellation model

42 mm 18K white gold case

Omega Constellation Globemaster Co-Axial Master Chronometer Watch - 39 mm Sedna Gold Case - Fluted Bezel - Silvery Dial - Brown Leather Strap - 130.53.39.21.02.001 Cornflower black rubber clad screw-locked crown39 mm 18K Sedna gold case, transparent back set with an 18K Sedna gold central Observatory medallion, fluted bezel, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, opaline silvery dial with Pie Pan design, caliber 8901 self winding Co Axial master chronometer movement with date function, approximately 60 hours of power reserve, brown leather strap. Water resistant to 100 m (330 ft).