Cover with postmark of Decepción Antarctic station for 25/JA/1964 (Image)

Cover sent from Gral. Belgrano III Antarctic base to B.Aires on 18/JA/1981, with nice mark "SEGUNDA DOTACIÓN", and arrival backstamp (Image)

6 Covers with postmarks of 5 different Antarctic stations, fine general quality (Image)

TAR-115, 50c. Mar del Plata, uprated with 25c., sent from Esperanza Antarctic base to B.Aires on 21/MAR/2002, VF (Image)

Cover sent from Islas Orcadas to B.Aires on 22/SE/1967, with handstamp of 40th anniversary, and arrival backstamp (Image)

Cover sent from Islas Orcadas to B.Aires on 12/JA/1973, with arrival backstamp (Image)

10c. Stationery envelope (SOB-20) used in B.Aires on 17/NO/1891, several marks "buzonistas" + "abonados" + "BUZÓN 46" (Image)

1c. Wrapper with arrival cancel of "SAN VICENTE" (Córdoba), sent from Córdoba on 17/OC/1894 (Image)

Lot of over 30 old postcards, most franked with stamps of the Seated Liberty issue, low start (Image)

5c. Postal card (TAR-31, view on back of presidents Roca and Campos Salles), uprated with 1c. (GJ.218), sent from B.Aires to Germany in OC/1900, with postage due mark, staple holes, very nice (Image)

5c. Postal card (TAR-44H, view of Andes mountains on back), uprated with 9c. (GJ.222 strip of 3), sent from B.Aires to Germany on 2/JUN/1903 (Image)

4c. Lettercard with additional postage that was removed, sent from Río II (Córdoba) to Germany on 24/AU/1903, with postage due mark (Image)

2 Postcards sent from USA to Argentina in 1906 and 1907, with POSTAGE DUE marks applied on arrival, attractive! (Image)

4c. Postal card uprated with 2c. (GJ.219), sent from San Juan to Graz (Austria) in OC/1907 (Image)

Cover sent from CARCARAÑÁ (Santa Fe) to Rosario on 19/FE/1910, franked with 5c (GJ.280) (Image)

½c. Wrapper with additional multicolor franking of 1½c., sent from Buenos Aires to Ayacucho on 12/MAR/1912, with VARIETY: the year in the postmark is inverted, VF (Image)

Mourning cover sent from Buenos Aires to Temperley on 22/OC/1915 (Image)

Cover sent from ANDINO to CORREA (both in Santa Fe) on 27/NO/1919, franked with 5c. (GJ.403), with transit marks of B.Aires (27/NO), Rosario (28/NO) and arrival (29/NO) on back, interesting (Image)

Stampless cover used locally in Buenos Aires on 17/AU/1925, with postage due mark on back for $0.10, VF! (Image)

Cover with slogan cancel "1826-July 1 1926 Centenary National Post", very nice (Image)

Stampless cover posted on 21/JUN/1930, with postage due mark on back for $0.10, VF! (Image)