OFFICIAL cover sent from San José to Rio de Janeiro on 29/NO/1940, franked with strip of 5 of the official stamp of 3c. of 1937 (Sc.O83) with "star" perfin, fine quality, very interesting! (Image)

22/NO/1970 San José - Argentina, registered airmail cover with diplomatic postal franchise of the Argentina Embassy, with attractive multiple postage of 12 stamps of 10c. + 1x 15c. of the issue FIGHT AGAINST CANCER, very nice! (Image)