Heraldry is the practice of designing, displaying, describing and recording coats of arms and heraldic badges. Historically, it has been variously described as "the shorthand of history" and "the floral border in the garden of history." The origins of heraldry lie in the need to distinguish ...
In Hungary they introduce new notes of 10000 HUF which contains a symbol I couldn't relate to Hungary's history, there were no official note known to me why do they use Patonce Cross on Hungarian note....
Wikipedia's flag for Prague shows red and yellow. I already think that the red comes from flag of Bohemia and yellow from flag of Habsburgs. But that is just a hypothesis.