This is another beautifully illustrated cover from Croatia: Mushrooms (full issue, se-tenant strip).
Stamps are often referred to as “miniature works of art” (probably mostly by stamp collectors themselves). This cover carries 3 real miniature works of art from Croatia.
This cover carries a souvenir sheet of 2 stamps featuring bridges in Croatia.
This cover carries 3 illustrated stamps from Croatia featuring amphibians that are found in the country.
This cover carries 2 stamps featuring archive images and schematics of postal vehicles in Croatia.
This cover features a miniature souvenir sheet containing a single stamp commemorating Croatia’s accession to the European Union on 1st July 2013.