Taken from the manufacturer:

Especially for this occasion a new set of chessmen was made, under the name "Dubrovnik". It was well accepted by the chess world, due to an elegant and interesting look. The design was made by Andrija Maurovič, a famous Yugoslav cartoon writer, and pieces were made in the workshop of master Jakovljevič in Zagreb.

By many sources these were the favorite pieces of world chess champion, Bobby Fischer, and were also used in the Spassky - Fischer 1992 rematch in Sveti Stefan.