グスタフ・シュトレーゼマン
In October and November 1923, Koeth was Minister of Economic Affairs in the second cabinet of Gustav Stresemann. It was so short-lived, though, that he was unable to make a major contribution to policy - although during his period in office the Papiermark was replaced with the Rentenmark, which laid the foundation for the stabilisation of the currency and the end of hyperinflation.