50¢ Sheet Stamp International Solo Uses

Currently, the number of solo uses of the 50¢ sheet stamp on an international first-class air mail letter is: 2. 

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Description: There was a 50¢ per one-half ounce airmail rate to the Philippines in effect from 4/27/1937 until 12/11/1941. The Air mail letter from Johnson City, New York to the Philippines on December 23, 1939 pays that rate.

Owner/Source: Mike Ley

Images:

Description: There was a 50¢ per one-half ounce FAM airmail rate From Hawaii to Europe in effect from 4/28/1939 until 10/31/1946. The Air mail letter from Hawaii to Scotland on December 7, 1940 pays that rate.

Owner/Source: Mike Ley

Images: