11.8.6 @euro (€): Euro Currency Symbol

Use the @euro{} command to generate ‘€’. Where possible, this is the symbol for the Euro currency. Otherwise, the word ‘Euro’ is used.

The Euro symbol does not exist in the standard TeX fonts (which were designed before the Euro was legislated into existence). Therefore, TeX uses an additional font, named feymr10 (along with other variables). It is freely available, of course; you can download it from http://ctan.org/pkg/eurosym, among other places. The distribution includes installation instructions.