OMEGA SEAMASTER AQUA TERRA MOTHER-OF-PEARL DIAL DIAMOND and STEEL Omega, "Seamaster Aqua Terra Co-Axial Chronometer, 150m/500ft," movement No. 86611283, Ref. 231153. Sold December 26th, 2015. Very fine, center seconds, self-winding, water-resistant stainless steel and diamonds wristwatch with date, mother-of-pearl dial and a stainless steel Omega link bracelet with concealed double deployant clasp. Accompanied by the original fitted box, warranty, Chronometer Certificate and booklet. Three-body, polished and brushed, lyre lugs, bezel set with 44 round diamonds, screw-down transparent case back and crown, sapphire crystals. Mother-of-pearl set with 12 round diamond indexes, aperture for the date at 6. Luminous steel arrow and dauphine hands. Cal. 8520, rhodium-plated, fausses cotes and oeil-de-perdrix decoration, 28 jewels, co-axial escapement, monometallic balance, self-compensating free-sprung flat balance spring, shock absorber, hack mechanism.