The original flag created by Manuel Belgrano in 1812, which is also supposed to be used by Argentine army during the battles for the independence. This flag was the "minor flag" until 1985 when the promulgation of Law 23.208/85 stated that the Sol de Mayo should be included in all the national flags of Argentina, without exceptions.
"Bandera Argentina desde 1944" - Angelfire
Manuel Belgrano (1770-1820)