Gold Standard was a brilliant way of managing currency fluctuations but it did not go on. And what seems to me is the limit on the amount of gold reserves is a big factor in that.
Standard of some sort such as silver and copper mix had always seeemed an ideal way of managing this since the graduate days. I believe this is more and more the case with the current emerging markets. The dilemma though is the fact that currency markets seem to be working amazingly well in market mechanisms. There seems to be an efficiency boost in dynamics of currency markets.