Omega De Ville Trésor Watch, 40mm Blue Dial, 435.13.40.21.03.001Characterised by its thin and elegant case, the Trsor line was first launched by OMEGA in 1949 and housed the legendary 30mm calibre. More than half a century later, it continues to impress with one of todays most advanced mechanical movements. This model has a 40 mm stainless steel case, which is presented on a blue leather strap. The domed blue patterned dial includes a date window at 6 o'clock as well as hands and indexes in 18K white gold. Inside,