Lot #10 1917 (Sep 2) Buenos Aires-Montevideo First International Flight Between Argentina & Uruguay per Teodoro Fels with Argentina 6c + 5c 'PRO-AVIACION MILITAR 1912' "flag" semi-postal stamp both tied by light Buenos Aires cds to viewside of real photo of shipping in the River Plate, two flight cachets on the reverse. Very scarce if non-contemporary usage of the Flag stamp, light stain on the address side. With 1957 FW Kessler letter valuing this item at $US200, real money 60 years ago!

Description:

1917 (Sep 2) Buenos Aires-Montevideo First International Flight Between Argentina & Uruguay per Teodoro Fels with Argentina 6c + 5c 'PRO-AVIACION MILITAR 1912' "flag" semi-postal stamp both tied by light Buenos Aires cds to view side of real photo of shipping in the River Plate, two flight cachets on the reverse, light stain on the address side. [Very scarce if non-contemporary usage of the Flag stamp; with 1957 FW Kessler letter valuing this item at $US200, real money 60 years ago!]