United States: Postal History 1935, Byrd Antarctic Expedition II Tin Can Mail Cover to Tonga f...

United States: Postal History
1935, Byrd Antarctic Expedition II Tin Can Mail Cover to Tonga
franked with pair of 3c Byrd, overpaying the 5c rate for surface/boat mail of 1oz or less, handstamped with blue "A Century of Progress / From Chicago to Little America / 1933 -1935" cachet and "Byrd Antarctic Expedition II" Second Cancellation Mail official cachet, Niuafoou c.d.s. on front, San Francisco (25 MR) and Nukualofa, Tonga (28 AP) backstamps, some light wrinkling, scarce and fine.
Cover