Exchange rates are refreshed daily and are the official ones published by Central banks Before 31/12/1998, the Euro(EUR) exchange rates are theoretical ones. Use the XEU code to see Ecu (European Currency Unit) exchange rates. Before 13/03/1979 XEU rates are theoretical ones. For Gold (XAU), Silver (XAG), platinum (XPT) and Palladium (XPD), rates and amounts are expressed in grams (1 ounce=31.103 g).