Guatemalan quetzal 5, 10, 20 and 100 quetzales, with quetzal notes added in 1933. In 1946, the Bank of Guatemala took over the issuance of paper money, with its first issues being overprints on notes of the Central Bank. Except for the introduction of 50 quetzales notes in 1967, the denominations of banknotes were unchanged until and 1 quetzal coins replaced notes at the end of the 1990s. In the top-right corner of the obverse face of each banknote, the value is displayed in Mayan numerals, representing Guatemala's cultural history. The Bank of Guatemala has introduced a polymer banknote of 1 quetzal
Golden-headed quetzal the family Trogonidae, which is made up of birds found in tropical rainforests worldwide. The word quetzal comes from the Nahuatl (the Aztec language) word "quetzalli" (from the root "quetz" meaning "stand"), which translates to "long green plume" or "tail feather of the quetzal". Quetzal is usually specifically used to refer to the resplendent quetzal ("Pharomachrus mocinno") first described by Pablo de la Llave in 1832 but in reality it applies to all members of the genera "Pharomachrus" and "Euptilotis". "Pharomachrus", coined by Pablo de la Llave, stems from Ancient Greek "pharos" meaning "mantle" or "cloak" and "makros" meaning "long"