The first four are from 1937 and the last and fifth one is from 1939. This first has interesting handwriting. It's a 15 centavos ship rate with 20 centavos registration to St. Louis, Missouri.
This 1.05 pesos rate from 1937 bears a relatively late use of the 1pL (the 1 peso with map borders one).
An intriguing 1 peso rate. Usually in 1937, I find 1.05 pesos rates. The cover does not seem to be missing a stamp.
A 2.05 pesos rate from mid-1937.
Finally a 1.15 pesos rate from 1939.
