I think this one is so far back in the book that is out not even listed.
At least I couldn't find it in my 2003 Scott catalog.
It looks basically like a 1939 3c Airmail stamp - Will Rogers leaving airport office. But this one has "Timbre Telegrafico Semana de Comunicationes Vale 5 cent"
Is it not in the Catalog because it is some sort of Telegraf Tax stamp and not a postal stamp? (A Cinderella?)
On this particular one, it looks like the "f" in Telegrafico is missing the top part of the "f".
Any Info appreciated