Iridescene
There is a subtle shinny strip running down the back of the note. It is a shimmering gold colour showing "1000 NAIRA". Other visible security features are:-

• Sensed by touch
• Visible with the naked eye
• Gold foil (Kinegram)
• Color Changing
• Security Thread
• Held Against Light
• Iridescence
• Ultraviolet Light
• Scattered Fibers