Two 1940 philatelic ship covers

 These are always great additions to any collection because some of the lower values saw almost no commercial postal use.

140. 35 1/2 centavos for a true 35 centavos rate to Ecuador.

141. 45 centavos for what should have been a 35 centavos rate to the United States. The 1940 use of the rare 10c Brown clay of 1939 is worth noting.

Two 1940 air mail covers with 1E4 stamps

 In some cases for this issue, the colors used for a specific paper are unique. Such is the case in two instances shown here.

137. 3.95 pesos. The 1 peso value is a 1p1E4. That specific blue for the ocean is unique to this printing.

148. 1.65 pesos to the United States. All three 50 centavos are 1E4, the brightest carmine shade, not found on any other printing.

A rare 1940 cover to France

France was under German occupation and the mail for this period has distinctive military markings.

This UA 7 marking is unque to this time period.

Two 1940 covers to England

 The first one is a ship cover, and the second one went by air mail. We can tell by the English slogan on the ship cover that it was hard times in England during World War II.

This stamp is bright enough to be confused with a 2pCL1, the dark colors clay and very rare issue, but it is not since the 2pCL1 was issued in 1943.

Five 1940 ship covers to the United States

 Ship covers to the United States from 1940.

135. This one should have a registration label since the rate is 15 centavos regular + 20 centavos registration.

136. Regular rate.

143. Regular rate.

144. Regular rate.

145. Regular rate.

Trying to separate the two 1E3 papers mentioned by Pettigiani

Here is a link to a viewing file I am using to figure out if there are two 1E3 papers, as Pettigiani lists, or only one.

https://drive.google.com/file/d/168s9X55ZSnPqYuyoibCdcwNAbR7VxFod/view?usp=drive_link

The 10p1E1 and 10p1E2 compared

 The 10p1E1 was the very first printing of 1936 and the 10p1E2 came out in 1937.

The 10p1L1 with doubled frame

 I find two. One not as noticeable and in good condition, and one clearly noticeable and in not so great condition. Here is the latter one.

Here is the former one. The doubling is not obvious.

The 10p1E4 is apparently scarce

 I am surprised. For years I assumed that since this stamp is in Pettigiani and priced at the same level as the 10p1E1 and 10p1E2, that when I got around to scanning all of my 10 pesos specimens, that I would find numbers similar to those of the 10p1E1 and 10p1E2, but all I found was one specimen. Thankfully, it is presentable!

The stamp has an interesting and noticeable plate variety.