Rubuta ci gaba don wannan sakin layi - Hawan Gwamna Juan Manuel de Rosas a matsayin Gwamnan Buenos Aires a 1829 ya sanya bankin ya saba wa tsarin shugabancin, duk da haka, kuma an sake sake shi a matsayin mint na lardin a 1836. Matsayinta na yanzu a cikin kudaden kasa ya ragu zuwa reshe na banki a kan shafin. Bayan juyin mulkin Rosas na 1852
, an maido da ma'aikatar a matsayin banki mai zaman kansa a cikin 1854 kuma a cikin 1863, an sanya shi a matsayin "Bankin lardin Buenos Aires", yayin da yake riƙe da aikinsa na haɗin gwiwa a matsayin kasa da lardin mint.