4c. Lettercard uprated with 8c. (GJ.177 + 178), sent from Buenos Aires to Sevilla (Spain) on 14/DE/1896, very nice (Image)

1c. Wrapper cancelled "B. del RIACHUELO" for 13/AP/1897, VF (Image)

2c. Wrapper cancelled "S.A. de GILES" (Buenos Aires) for 29/NO/1897, VF (Image)

4c. Lettercard cancelled "PUERTO LA PLATA" 17/MAR/1898 (Image)

Postcard franked with 6c. (GJ.223), with green-blue cancel of "SANTIAGO", sent to Copenhaguen (Denmark) on 25/AU/1902, unusual destination (Image)

Cover franked with 35c. (GJ.222 + 227 x2), with cancel of ISLA MACIEL of 24/SE/1904, small stain spots, rare origin! (Image)

Cover franked with 15c. (GJ.227), sent from Buenos Aires to Palermo (Italy) on 21/JUL/1908, including a long letter written in Italian, with arrival backstamp (Image)

Cover with cancel of "Villa Cañas" (Santa Fe) of 29/JUL/1927, sent to Mercedes (Buenos Aires), arrival backstamp (Image)

Cover franked with $3.98 (GJ.602 + 639 + 654), sent from Buenos Aires to Germany on 10/MAY/1929, the stamps with defects, rare high postage! (Image)

Cover with violet cancel of Berdeier (Buenos Aires) for 26/MAY/1929, sent to Windisch (Switzerland), scarce! (Image)

Cover franked with 30c. (GJ.600 + 681, both in pair), sent from ESQUIU (Catamarca) to Córdoba on 1/NO/1932, very nice (Image)

Cover franked with $3.20 (GJ.605 + 645 + 647 + 586 pair), sent from Buenos Aires to Germany on 17/AP/1934, VF! (Image)

Cover franked with 5c., with cancel of "CAPITÁN CASTRO", sent to Buenos Aires, rare! (Image)

Last day of use: Cover posted on 31/AU/1945 franked with 83c. (12 different stamps ) on last day of use, rare (Image)

Cover franked with 40c., with cancel of "VOLTA" (Buenos Aires) of 22/MAY/1957 (Image)

Cover sent to Buenos Aires on 21/JUN/1967 cancelled Estafeta Fluvial 9, franked with $10 (GJ.1385 x2), nice cancel of Philatelic Conferences, VF! (Image)

Cover with 2 different special postmarks for 50th anniversary of PLUS-ULTRA flight, VF! (Image)

8c. Stationery envelope with cancel of "PALERMO" of 30/AP/1884, sent to San Juan (Image)

FIRST FLIGHT: Cover with special pmk of Buenos Aires - Antofagasta flight of 21/OC/1984, light staining (Image)

Airmail cover with printed matter posted on 21/OC/1993, with mixed postage A3000 + $0.51 (Australes + Pesos), GJ.2227 x6 (one with VARIETY: shifted colors, appearing to be a double impression) + GJ.2596 (Image)

50c. Postal card uprated with 50c., sent from B.Aires to Rio de Janeiro, with cancel of 4th Intl. Congress of Aeronautics & Space of 29/AU/1998 (Image)