Banknotes and Coins Glossary

Banknotes and Coins Glossary

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Thermochromic pigments and dyes 
Dyes whose colour changes with temperature (for example, liquid crystal dyes).
Tilt effect 
The perceptible change in an image or object in terms of brightness, colour or content, on changing the direction of observation or light angle.

Transparent quality. In banknotes, public security features such as the watermark and the see-through register can be properly examined through transparency (against the light).


Printing technique that uses a printing form with a relief image, which is inked and transferred to paper. The numbers of valuable documents are often printed using typography.