A Banco Central de la República Argentina 50 pesos note from the 'peso ley' series introduced under Decreto-Ley 18188/69, featuring a portrait of General José de San Martín on the front and a view of the Termas de Reyes hot springs in Jujuy on the back. The peso ley replaced the old peso moneda nacional at a rate of 100 to 1 in 1970 as Argentina struggled with persistent inflation.