HOLOGRAM COINS GAIN POPULARITY

Commemorative Coins & Security Purposes See Growth

- DR. PAUL DUNN, PH.D.

A cross the world, mints continue to recognize the eye-catching appeal of holograms for their commemorative coin programs for the collectors' market, says Dr. Paul Dunn, Ph.D., chair of the International Hologram Manufacturers Association.

The application of holograms on commemorative coins started in the early 1990s. They are mainly added for eye-catching decoration and to generate interest among numismatists. Cryptocurrencies are also now using holograms as labels to protect security codes.

HOW HOLOGRAMS ARE USED

Holograms are a composition of fine lines that are engraved into the coin die that shows different effects according to the viewing angle. In holograms, the effects are dependent on small and precise microgrooves. When these microgrooves start degrading as they do in both the minting process and when handled so does the image. Because of this, holograms are not suitable for large volume production or high circulation use. But they do have benefits for collectors’ coins and bullion products, offering a mark of authenticity along with visual appeal. Using the latest techniques, it is possible to create holographic effects on the top of engraved coin surfaces. This way the hologram doesn’t occupy the entire coin surface but only a certain part to enhance the overall design. Few mints can produce holographic coins all by themselves and usually work with a partner to apply the hologram. The first ever holographic coin was a silver coin with a gold insertion of nominal value issued by the Czech National Bank.