2/FE/1959 Day the American Ellsworth Station was handed over to Argentina, cover of VF quality! (Image)

Inauguration of the Petrel Naval Air Base, cover with postmark of 22/FE/1967 and signature of its first Commander (Eduardo Figueroa), rare! (Image)

ANTARCTIC FLIGHTS: 9 Covers flown between 1968 and 1973, all with special handstamps, VF quality! (Image)

25/SE/1969 First wheeled landing in Antarctica (on a natural ground runway), cover carried by airplane Beaver P-03 which flew from Teniente Matienzo station (signed by the Commander) and landed on the runway of Vice Comodoro Marambio Island which was under construction and at the time was only 300-meter long. VF quality, rare! (Image)

29/OC/1969 Inauguration of the Antarctic air base Vice Comodoro Marambio, flown cover with special handstamps and signature of the Captains, VF and rare (Image)

16/MAY/1970 Inauguration of the research station in Gral. Belgrano Antarctic base, cover with special marks and signatures of the chiefs, VF (Image)

14/AU/1970 Inauguration of the Antarctic synoptic weather station in Marambio Base, cover with special handstamp and signatures of the chiefs, VF and rare! (Image)

20/MAY/1973 Inauguration of the weather satellite picture receiving station in Marambio Base, cover with special handstamps on front and back, excellent quality! (Image)

10/AU/1973 First Presidential flight to Antarctica (to Marambio station), cover with dispatching and arrival cancels + varied special handstamps, VF quality, rare! (Image)

4 to 10/DE/1973 TRANSANTAR Operation: Experimental flight from Buenos Aires to Canberra (Australia), with a stopover at Marambio station (4 to 7/DE), and return flight from Christchurch to Buenos Aires (9 to 10/DE), flown on Hercules C-130 plane, excellent quality, rare! (Image)

7/JUN/1980 First Transpolar Commercial flight Buenos Aires - Auckland - Hong Kong, 2 covers flown from Buenos Aires to those destinations, with arrival backstamps, excellent quality! (Image)