The euro traded at US$1.3350, up from US$1.3305 late Friday.
Other dollar rates:
117.78 Japanese yen, down from 118.27.
1.2151 Swiss francs, down from 1.2217.
1.1554 Canadian dollars, up from 1.1522.
The British pound traded at US$1.9726, up from US$1.9593.
Gold traded in London at US$663.60 per troy ounce, up from US$658.70 late Friday.
In Zurich, gold traded at US$661.65, up from US$661.25 on Friday.
Gold closed at US$663.30 an ounce in Hong Kong, up US$0.40 an ounce from Friday.
Silver opened in London at US$13.35 per troy ounce, up from US$13.16.
The choice of the city of Helsinki is not incidental as the capital of Finland had hosted US-Soviet negotiations on the limitation of nuclear stockpiles in 1969