The original Omega Trésor dates back from 1949. Characterised by its thin and classic gold case it housed a 30 mm calibre within. De Ville Trésor has been reintroduced, equipped with one of the most advanced Co-Axial calibre that was developed especially for the De Ville Trésor. It is the Omega Master Co-Axial calibre 8511, a manual winding movement that also features an easy zonetime function, an 18-carat red gold balance bridge, a Si14 silicon balance spring, a three-level Co-Axial escapement and Omega's exclusive anti-magnetic technology. This officially certified chronometer by Contrôle Officiel Suisse des Chronomètres (COSC) is made to resist magnetic fields greater than 15,000 gauss or 1.200.000 A/m, now augmenting the reliability and chronometric performance that has always characterised Co-Axial calibres.
Omega De Ville Trésor calibre 8511 is housed in a slim and elegant polished 40 mm case crafted either from 18 carat Sedna™, yellow or white gold. Underneath the box-form scratch-resistant sapphire crystal is the silvery opaline domed dial decorated with a vintage "Clous de Paris" structure or for the limited series an enamel dial. Complementing its domed curve, the hours are marked with applied domed 18-carat gold indexes. The effect is completed with 18-carat gold hands, including arched minute and seconds hands.comes on a stylish curved black or brown leather strap with a polished 18-carat gold buckle. The polished case back is engraved with "ANTI-MAGNETIC", ">15'000 GAUSS" and "Si14". The large domed sapphire crystal provides an unobstructed view of the exclusive mechanical movement within.