Hologram

It is a nano-structured surface engineered with precision, functioning as a high-level authentication element rather than a decorative addition.

How It Appears

A hologram appears as a metallic foil patch or stripe that is physically integrated into the banknote through a high-pressure hot-stamping process. The foil sits flush with the paper surface, without a noticeable edge. When the boundary can be felt with a fingernail, it often indicates later application rather than original production.

Its defining characteristic is not brightness, but spatial behaviour. When the note is tilted, the imagery does not simply reflect light — it shifts within a controlled optical field. Elements may appear to rise above the surface or recede into it, creating a subtle parallax effect that gives the feature a sense of depth.

Colour transitions are continuous and structured, often moving through a defined spectrum without abrupt breaks. Under magnification, the surface reveals a dense micro-structured layer responsible for splitting and directing light in a precise and repeatable manner.

In comparison, imitations tend to appear flat. They may reflect light, but lack depth, internal movement, and consistency of transition.

Functional Role

The hologram operates as a diffraction-based authentication system embedded at the material level of the banknote.

Its micro-structured surface is composed of microscopic gratings that interact with light in a predictable way. Because this behaviour depends on physical structure rather than printed image, it cannot be reproduced through scanning, photocopying, or standard printing methods.

Attempts at reproduction typically result in static reflections that fail to respond to movement. The optical system collapses, leaving only a superficial resemblance.

In this way, the hologram functions as both a public and professional verification tool. It allows immediate visual confirmation while also providing deeper structural evidence of industrial production standards.

Why It Matters to Collectors

For collectors, the hologram is one of the most condition-sensitive elements of a modern banknote.

Unlike ink, the foil surface is vulnerable to physical and environmental damage. Fine scratches, surface dulling, or loss of reflectivity can significantly affect the visual integrity of the feature.

One of the most critical forms of damage is oxidation. In poorly stored notes, the metallic layer can darken or lose its reflective properties. When this occurs, the hologram no longer interacts with light as intended, and the note loses a key aspect of its original character.

Folds across the hologram introduce another layer of complexity. A genuine fold disrupts the internal micro-structure, often visible under magnification as a subtle fragmentation of the optical effect. When such areas appear unusually smooth, it may indicate that the note has been pressed or altered.

Because of this sensitivity, the hologram becomes a reliable indicator of both preservation and handling history. A well-preserved example retains clarity, depth, and controlled movement, while a compromised one loses coherence.

For an experienced collector, the hologram is not judged by how much it shines, but by how precisely it behaves.

Hologram vs Kinegram

A hologram produces depth and colour shifts through light diffraction across a micro-structured surface.
A kinegram generates motion through precisely engineered line geometry and directional reflection.

A simple distinction:

A hologram creates depth within the image.
A kinegram creates movement across it.

Related Terms

• Kinegram
• Optically Variable Device (OVD)
• Foil Patch
• Optically Variable Ink (OVI)
• Ultraviolet (UV) Features

Frequently Asked Questions

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