@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.