 The authentic historical flag is the "Rot-un-Wiss" ; Red and White are commonly found on the coat of arms of Alsatian cities (Strasbourg, Mulhouse, Sélestat...) and of many Swiss cities, especially in Basel's region.The German region Hesse uses a flag similar to the Rot-un-Wiss.As it underlines the Germanic roots of the region, it was "replaced" in 1949 by a new "Union jack-like" flag representing the union of the two départements.