1944 Rare Omega Pre Centenary in 18ct Gold with 18ct Gold Dial Model 2500 Pre ConstellationThis Watch The Centenary is, very excitingly, the first Omega automatic chronometer. It was produced in 1948 with the Centenary text on the case back to celebrate Omega's 100th anniversary, hence its name. It is understood that the watch line watch first produced in late 1943 . This watch must be one of the first availbe to the public dated via the serial number at 1944 . There were two versions that were made, the 2499, measuring 33mm and the 2500,