This is the old peso currency of 1000 issued by Argentina from 1976 to 1983. On the front of the banknote is Jose de San Martin, the Argentine general and national hero; On the back is the May Square in Buenos Aires, Argentina. Argentina has experienced many currency changes: the old peso->; Oster-> new peso. According to the exchange rate at that time: 1000 old peso = 1 oster, 1 wanoster = 1 new peso. At present, the currency in circulation in Argentina is the new peso, so according to the conversion, the old 1000 peso is only 0.000 1 new peso. Moreover, at present, the new Argentine peso is not convertible in China, and it needs to be converted into US dollars: 1 new peso is converted into RMB about 1.2 yuan. So 1000 old peso is about 0.000 12 RMB. So there is no way to change it.