1902 - 1903 Liberty Head Overprinted in Red or Blue With
"Ademas del valor del timbre un centavo por el sobre (Ley de Tarifas)"


1909, APRIL 21: ROSARIO SANTA FE to ILLINOIS
5c Red envelope registered with added 33c adhesives. Backtamped NEW YORK, May 19.


1908, MARCH 25: BUENOS AIRES to GERMANY
15c Blue single outbound rate envelope to Europe.