There was a 40¢ per ½ ounce air mail rate to portions of South America (Argentina, Brazil, Chile, Paraguay, and Uruguay) in effect from December 1, 1937 thru March 31, 1945. Currently, the number of solo uses of the $2 sheet stamp known on cover paying five times the ½ ounce airmail rate to one of those countries is: 1.

 

Description: Air mail cover, dated November 25, 1941, with a solo $2 Prexie paying five times the air mail rate from New York to Buenos Aires, Argentina.

Owner/Source: Bob Hohertz web site.

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