Here is a airline issue label from Italy. L.A.T.I. ( Linee Aeree Transcontinentali Italiane ).
The transcontinental Italian Airlines, also known by its abbreviated form L.A.T.I, was an airline of Italian line set up to manage state-owned postal air links with South America. It was a subsidiary company of Ala Littoria S.A. (Wikipedia).
Year: 1935, Gummed. Günter Mair's catalogue no:- ITA-B-27, perforated 10 ¾ , sheets of 10(2x5)
blue or grey-blue/white, 4****
Year: approx.1940, Gummed. Günter Mair's catalogue no:- ITA-B-37, rouletted, dark blue/white,
issued for customers in Brazil, 4****