Aerovias Nacionales (Puerto Rico)

Aerovias Nacionales of Puerto Rico was an airline and package service serving the island.

 File:Aeronavias Nacionales $1 first.jpg|1938 $1 value File:Aerovias Nacionales 1c triangle.png|1941 1c value 
 * In 1938, six values plus two surcharges were issued for its express service. They were prohivited by the US Post Office but later tolerated. The stamps were an additional charge for mail which still required proper US postage.
 * In 1941, eight bicolored triangle designs were released but soon prohibited by the US Post Office Department in 16 September 1941.

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