Hum – Planetarium Višnjan set of the Croatian Mint

verbal communication / product identity / packaging design

The Croatian National Bank issued and the Croatian Mint minted the smallest coin in the world – a gold coin with a diameter of only 1.99 millimeters and a weight of only 0.05 grams, which bears the motif of Hum, known as the smallest city in the world. The coin is part of a numismatic set in a limited series of only 199 pieces, in which there is also a one-ounce gold coin with the motif of the Višnjan Observatory. These are the last gold coins with kuna denomination. The author of the “Hum” gold coin is the sculptor Ana Divković, and the author of the “Zvjezdarnica Višnjan” gold coin is the sculptor Nikola Vudrag.

The story of this product is inspired by discovery, guided by the trait innate to all humanity – the desire to explore. Over the millennia, human research endeavors have led to sailing the sea, discovering new knowledge, conquering the earth and sky, and exploring space. The packaging concept of the Hum – Planetarium Višnjan set evokes this line of research and leads through an experience in which complete preciousness is gradually revealed.

Special attention was paid to the exclusive packaging in which this special set is placed: a hard laminated box, covered with a special dark blue paper, opens like a map, and leads to the valuables, providing an experience of discovering immense value. The opening process is an experience in itself. By unfolding from smaller to larger, each step reveals one part of the set, with golden text guiding you through it. When fully opened, the Hum and Zvjezdarnica Višnjan gold coins are revealed, on a surface illuminated by many tiny lights, like the starry sky. Along with the gold coins, the box also contains protective cotton gloves and a magnifying glass for viewing the smallest coin.


  • Croatian Mint

Creative team

  • Jelena Gvozdanović, Izvorka Jurić (creative direction), Izvorka Jurić (art direction), Jelena Gvozdanović, Izvorka Jurić (design), Jelena Gvozdanović (verbal communication), Natalija Najjar (production manager), Jurica Kos (presentation photo)

Awards and honors

finalist in the Design category IdejaX Best of Ad-Making
2023, Croatia