MONTEVIDEO, Uruguay. Postal stationery and postmarks (1900)

URUGUAY.

Postal stationery:

Tarjeta
UNION POSTAL UNIVERSAL
UNION POSTALE UNIVERSELLE
REPUBLICA ORIENTAL DEL URUGUAY
3 CENTAVOS

Postmarks:

1.
CORREO / A
MONTEVIDEO
08.09.1900

2.
?????
RIO GRANDE DO SUL  [Brazil]
?.09.[1900]