A complex security feature developed by De La Rue Company. It is an image printed on a foil substrate. The high relief image is applied by intaglio. The kaleidoscopic effect appears in the image when the banknote is rotated clockwise (anti-clockwise). This effect is characterized by illusory motion of alternating light and dark geometric figures from the center to the periphery. The distribution of light and dark areas in the image is determined by the shape of the strokes, ink relief and illumination.

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