Urania age determination according to date threshold 1904

In 1904, the "Regulator Watch Factory "Urania" in Freiburg (Silesia) announced the production of the twenty-five thousandth watch

All watches with a movement number lower than 25,000 were produced before 1904, all with a movement number of 25,000 or higher were produced between 1904 and 1912

Source: "Encyclopedia of the German watch industry 1850 - 1980" Hans - Heinrich Schmid