Holograms: the €5, €10 and €20 notes carry a holographic band to the right of the front side. This band is imprinted with the note's denomination; e.g., "€5 €5 €5...." in the case of the five-euro note.
In the case of the €50 notes and higher, the band is replaced with a holographic decal.
Variable colour ink appears on the lower right corner of back side of the €50 and higher. When observed from different angles, the colour varies between purple and green.
Registration: The note denomination in the upper-left corner of the front of each note is printed incompletely, as is the denomination in the upper-right corner of the back. When held up to the light, this denomination is visible in its entirety. Genuine notes will exhibit perfect alignment (or 'registration') between the front and back. If the note has been printed incorrectly, i.e. by a counterfeiter, these numbers may appear poorly aligned.





