The stolid and trustworthy Bundesbank succeeded the Reichsmark and the Union was finally vanquished only by the bureaucracy in Brussels and its euro. This is the only case in history of a successful monetary union not preceded by a political one. But it is hardly representative.
Prussia was by far the dominant member of the union, as it comprised 70% of the population and land mass of the future Germany. This last collaboration was to be a short lived affair, Prussia and Austria having declared war on each other in 1866. He founded the Reichsbank in 1875 and charged it with issuing the crisp new Reichsmark.