Airmail cover sent to Buenos Aires on 28/JA/1971, with cancel of MARAMBIO Antarctic station, along "Correspondencia Transportada por Helicóptero" handstamp, VF quality (Image)

Cover with datestamp of San Martin Antarctic base 12/FE/1988, VF (Image)

12/JUN/1866: Entire letter sent from B.Aires to Bordeaux, with postage due "10" handstamp, consular mark "PAQ. FR. Nº1" and transit "1 BRESIL 1 - BORDEAUX" (19/AU/1866), arrival backstamp, VF (Image)

Letter sent from Buenos Aires to ASUNCIÓN (PARAGUAY) on 25/MAY/1872, franked with 5c., with very interesting 2-page long text about commercial issues, the creation of a BANCO HIPOTECARIO, etc., VF (Image)

Large part of a cover front sent by steamer "Gironde" to Italy from Buenos Aires on 24/DE/1884, franked with 24c. San Martín rouletted (GJ.52), VF quality (Image)

4c. Postal card sent to Buenos Aires on 30/JUN/1886, with circular datestamp in green of AZUL (Buenos Aires), VF quality (Image)

½c. Wrapper sent to B.Aires in 1889, with cancel of traveling PO, rejected by the addressee, with "DEVUELTO OF. DE IMPRESOS" and datestamped "OFICINA DE LISTAS CAPITAL", VF (Image)

GJ.133 + 134, in PAIRS franking wrappers for printed matter used in August in September 1890. These stamps are very scarce used alone in pairs, paying the second rate for newspapers, rare! (Image)

Lettersheet (memorandum) sent from Concordia to Sauce (Corrientes) on 10/JA/1881, with good combination of stamps: 1867/73 4c. Próceres and 1889/91 1c. Sudamericana (Image)

5c. Stationery envelope sent from Buenos Aires to Santa Fe in 1893, with datestamp "SUCURSAL CENTRO SUD" along "BUZON 61", several transit marks on back, VF (Image)

Wrapper sent to Leipzig (Germany) circa 1894, franked with 1c and 5c. Rivadavia, VF quality (Image)

5c. Stationery + 7c. sent from B.Aires to France on 23/MAR/1895, with cancel of French paquebot "LIGNE J - Nº3" in blue, arrival backstamps, VF (Image)

Cover sent from Buenos Aires to Leipzig (Germany) on 27/AU/1897 franked with 12c. Belgrano with sheet corner, VF quality (Image)

Cover with corner card: "Inventer and manufacturer of artificial limbs with rubber hands and feet", sent to New York on 31/JA/1898, franked with 12c. Belgrano, cancelled "ESTAFETA AMBULANTE - F.C.O. Nº18", VF quality (Image)

AU/1899: Buenos Aires - Sistri Levante (Italy) cover franked with 2c. and 2x 5c. Rivadavia (total 12c.), with advertising for oil (Image)

5c. Stationery envelope sent to Buenos Aires (circa 1900) with datestamp of MONTEROS (Tucumán), VF (Image)

Cover sent from Buenos Aires to New York on 28/MAY/1900, and from there forwarded to Chicago, mixed postage of 12c. formed with 10c. Belgrano (GJ.143 or 179) and 2c. Seated Liberty (GJ.219) (Image)

Registered 15c. stationery envelope, sent from Paraná to Washington in 1902, franked with 2c. Liberty perf 12¼ + 10c. MIXED perf 11½x12¼ (total 27c.), VF quality, rare! (Image)

5 Postcards used in SAN FERNANDO between 21/AP/1904 and 28/JUN/1904, with interesting postages of 1c., 2c. and 4c. consisting of different combinations of the Liberty seated issue, VF quality! (Image)

15c. Stationery envelope sent from B.Aires to France on 5/AU/1904, with mark "BUENOS AIRES A BORDEAUX 2º - L.K Nº4", and arrival backstamp, VF (Image)

2c. Wrapper sent from Buenos Aires to Regensburg (Germany) on 15/JA/1905, uprated with 2x 2c. and 5c. Seated Liberty (total 11c.), with German cancel applied over the Argentine stamps, VF quality (Image)

5c. Stationery envelope sent to Buenos Aires on 27/MAR/1911, cancelled (also on back) "BUENOS AIRES A ROSARIO - F.C.B.A. (Nº2)", rare! (Image)

Circa 1915/6, 8 covers and 2 fragments with semi-mute slogan cancel of Buenos Aires "R", good frankings, VF general quality (Image)

Mourning cover franked with 2c. San Martín 1917, sent to Temperley on 12/NO/1915, with violet datetamp of JUAN MARÍA GUTIERREZ (B.A.), VF (Image)

Cover franked with 5c., sent to B.Aires on 10/MAR/1917, with datestamp of CORREA (Santa Fe), VF (Image)