The Europa search page is an excellent tool.
Search word "gold":
There are many nice docs revealed here, good to research, e.g. history how investment gold got its 0% VAT in EU..
Many Finds e.g.:
2. One from many explanations:
The European flag – 12 gold stars in a circle
(nice - http://en.wikipedia.org/wiki/European_flag - "12 ounces in a troy pound")
3. Nice doc:
A return to the convertibility principle?
Monetary and fiscal regimes in historical perspective.
The international evidence by Michael D. Bordo and Lars Jonung
4. Nice doc:
A long term perspective on the euro; Michael Bordo and Harold James