Gold is the final refuge against universal currency debasement
So we have an early 1930s world where surplus states are hoarding money, instead of recycling it. A solution of sorts in the Great Depression was for each deficit country to devalue, breaking out of the trap (then enforced by the Gold Standard). This turned the deflation tables on the surplus powers – France and the US from 1929-1931 – forcing them to reflate as well (the US in 1933) or collapse (France in 1936). Contrary to myth, beggar-thy-neighbour policy was the global cure.