This Argentine postage stamp, issued in the 1960s, promotes the hobby of philately with the message “Coleccione Sellos Postales” (“Collect Postage Stamps”). The design features a magnifying glass inspecting a perforated stamp outline, symbolizing the careful study and enjoyment of collecting. Printed in a bold green color, it carries a face value of 30 pesos and bears the inscription “Republica Argentina.” Stamps like this were part of Argentina’s effort to encourage public interest in stamp collecting, making it a unique philatelic item that connects both postal history and the growth of the hobby itself. A desirable piece for collectors of thematic "stamp on stamp" designs and promotional issues.