Earlier this year, IQ Structures, a Czech specialist in optical nanostructures, launched IQ Mint, a technological solution for anti-counterfeit protection and the visual enhancement of precious metal objects, such as coins, medals and investment bars.

The Colombian Mint (Fábrica de Moneda) has received an award from the Colombian government for technical innovation, in recognition of the development of a new technique that enabled the continuing production of the country’s two highest denomination coins, despite the breakdown of a key piece of machinery just before the pandemic struck that prevented it being repaired.

The use of surface relief holograms to create striking visual effects on coins is not necessarily a new technology, but one that is a challenge for circulating coins because of durability.