The Philatelic and Numismatic Division of the San Marino Post Office is back again to issue stamps celebrating comic strips. This time it is an important birthday to commemorate, that of Mafalda, created by Argentinean Joaquín Salvador Lavado, aka Quino, who first appeared in 1964 in a weekly magazine. The little Mafalda has become world-famous for being a defiant protester in the most authentic sense of the word, posing profound questions with a spontaneity that only children have, but expressing fulminating considerations with a mature insight. This is the great strength of a character who never grows old, a rebellious spirit frozen at the turbulent age of six. The sheet contains three values of 1.40 euro, which reproduce as many vignettes showing Mafalda conversing in Spanish with her teddy bear in her arms, taken from a comic strip.