By Parieu's advice, a scheme was approved recommending the adoption of the single gold standard, decimalisation of currencies, and the coordination of the various currencies with the French currency system.[7]
Difficulties as to the mode of bringing these principles into practical operation were discussed, and full liberty had to be given to the several nations to carry out the proposals in the way that seemed best. The conference concluded on 6 July 1867, with a stance favorable to the gold standard (as was Parieu's preference) but recognition that the transition from bimetallism would be gradual.[8]: 70
The aftermath proved that the obstacles to international standardization of currency were insurmountable. The British government could not obtain the assent of a Royal Commission to the pegging of the sovereign to the 25-franc piece. The course of political events soon completely altered the relative position of the leading countries, including in their monetary relations. Germany and the United States reformed their currencies in the 1870s without reference to any international considerations.
^Nussbaum, Arthur (1950). Money in the Law National and International: A Comparative Study in the Borderline of Law and Economics (2nd ed.). Brooklyn: The Foundation Press. p. 551.