These were followed by 50 centavo notes in 1882 and 10 centavos in 1885. The first coins of the peso currency were 1 centavo pieces minted in 1863. Ecuador now only issues its own centavo coins. In 1835, copper and 1 centavo coins were issued. Since 1983, inflation has left the centavo coins obsolete. Temple I at Tikal was featured on the reverse of the 50 centavo banknote. Since 2000, Espejo has been depicted on the obverse of Ecuador's 10 centavo coin. The last US produced coin was the 1961 five centavo piece. The following year, cupronickel replaced silver in the 5, 10 and 20 centavo coins. The 2 and 5 centavo coins are no longer in circulation. The coin's images were identical to those of the half-centavo and one centavo coin. Newspaper stamps of 1/2 and 1 centavo fuerte appeared in March 1862. One centavo is equal to one US cent. The smallest currency unit is called centavo in English (from Spanish "centavo").