This cover is an 8.35 Pesos rate. It has singles of the 5 Pesos, 2 Pesos, and 1 Peso. It also bears a 35c commemorative. The 2 Pesos stamp on this cover has a distinctive plate variety. The cover was posted May 18, 1945. Below are detailed images of the stamps, the postmark, the 2 Pesos plate variety, and the receipt marks. There are six 5 Pesos covers in this correspondence, five of which have this value as the highest on the cover, hence the count of 5 above. Quick links: main page / 5c and 10c / 20cLC, 25c, and 30c / 40c and 50c / Airmail Stamps / 1 Peso / 2 Pesos / 5 Pesos / 10 Pesos

Here is a detail of the 1 Pesos and 5 Pesos. The usage date and colors on both of these stamps are consistent with the NGR issue.

Below are the 35c commemorative, and the 2 Pesos on this cover. The usage date and colors on the 2 Pesos are consistent with the NGR issue.

Here is a larger image of the 2 Pesos. Notice the plate variety: a nick on the outer mid to upper left edge of the reddish brown frame.