Obverse: Two similar and inverted images of Luís Alves de Lima e Silva, Duque of Caxias (25 August 1803 – 7 May 1880) at center. The first 4 digits of the serial number represent the series number. Reverse: Two similar and inverted images of Battle scene of the War of the Triple Alliance (Paraguayan War) at center. Two similar and inverted images of a sword in center. First four digits of serial number represent series. Series 4082-8176 (1984)