Passports of the Mercosur

The Mercosur itself does not issue ordinary passports, but ordinary passport booklets issued by its 5 member states (plus associated), and share a common format. This common format features a colored cover (for which blue) emblazoned—in the official language(s) of the issuing country (and sometimes its translation into English and French)—with the title "Mercosur", followed by the name(s) of the member state, the heraldic "Arms" of the State concerned, the word "PASSPORT", together with the biometric passport symbol at the bottom center of the front cover.

Source: Wikipedia — Passports of the Mercosur (CC BY-SA 4.0)