Mail guide (Guía de correspondencia) sent from Tucumán to Córdoba on 4/NO/1836, excellent quality! (Image)

Cover franked with 8c. Rivadavia (GJ.54), sent from COLONIA LARGUIA (Santa Fe) to Buenos Aires on 6/JA/1872, with Rosario transit and arrival marks on back, fine quality, rare cancel! (Image)

Telegram of the National Telegraph sent on 5/MAY/1874, fine quality (with a small insignificant tear), rare! (Image)

Cover franked with 5c. (GJ.38) with datestamp of SAN LUIS with Maltese cross, sent to Buenos Aires on 24/SE/1874 (Image)

Cover franked by GJ.54, with attractive cancel "ROSARIO DE SANTA-FE" with star, sent to Buenos Aires on 6/JA/1882, including the original letter, interesting! (Image)

13 Covers used between 1894 and 1908, with nice postages and/or interesting cancels, for example traveling PO (Estafetas Ambulantes), Estación Larquia, Telen, Cañuelas, etc, low start! (Image)

8 Covers used between 1894 and 1908, with interesting cancel of the province of Buenos Aires: Cañuelas (2 different), Bernal, Salvador María (violet) and Mar del Plata, very nice group, low start! (Image)

7 Covers used between 1895 and 1899, interesting cancels, very fine general quality (one with defects), low start! (Image)

Cover used on 26/OC/1898, with spectacular commercial printed head ("Chiesa Hermanos", of Rosario) illustrated with a Randolph harvester, VF and very nice, market value approx. US$50/75. (Image)

Cover franked with strip of 3 of 2c. Liberty cancelled LUJÁN (MENDOZA), to Buenos Aires on 3/JA/1905, VF quality! (Image)

Postcard with view of 'San Martin Falls' franked with 5c. Liberty, with postmark of CAPILLA DEL MONTE (Córdoba), sent to Buenos Aires on 27/NO/1907, VF! (Image)

2 Covers sent to Buenos Aires in 1908 franked with 5c. San Martin in oval, cancelled "F.C.C. Y R. Nº2 - DISTRITO 4º" and "F.C.C. Y R. Nº3 - DISTRITO 4º", with some minor opening faults but rare and with the cancels very well applied! (Image)

Telegram sent from Estación Larguía to Buenos Aires on 8/OC/1908, including the envelope in which it was delivered, excellent quality! (Image)

2 Covers sent to Buenos Aires in OCT and DE/1908, franked with 5c and 10c. cancelled "LAS ACEQUIAS - CORDOBA", VF quality, rare! (Image)

Cover with printed advertising on front and back (windmill, etc.) franked with 5c. (combining 1c. Seated Liberty + pair 2c. San Martin in oval), sent from LINCOLN to Buenos Aires on 21/DE/1908, VF! (Image)

Cover with nice advertising head ("Onena toilet cisterns, Campeón wire"), franked by GJ.471 and sent from Buenos Aires to England on 25/FE/1920, VF quality, market value US$ US$20/30. (Image)

Flight to reach steamer "Ceylan" in Senegal, 12c. airmail stationery envelope + additional postage, posted by registered mail in Buenos Aires on 9/OC/1928, with arrival backstamp of Dakar 18/DE!!, rare, very fine quality! (Image)

2/SE/1929 FIRST FLIGHT Buenos Aires - Santiago de Chile by Cie. Grale. Aeropostale, very handstamp postage and signed by the pilot Guillaumet, with arrival marks on front and back, excellent quality! (Image)

Cover franked with 97c. sent to France of 6/JUN/1930 on the FIRST FLIGHT of the Aeropostale (pilot Jean Mermoz), VF quality! (Image)

Airmail 5c. stationery envelope with colorful additional postage, sent from Ranchos to England on 6/MAY/1931, with some minor faults but very nice! (Image)

28/JUN/1934 Buenos Aires - Colonia, airmail cover, possibly flown on the Zeppelin that flew to Europe on 30/JUN. The postage includes a 12c. San Martin stamp with VARIETY: double vertical perforation, rare! (Image)

30/JUN/1934 Buenos Aires - Germany: Cover flown on the first and only direct flight of the Graf Zeppelin, with arrival backstamp of Friedrichshafen (Image)

CRASH COVER: 2 Airmail covers sent from Buenos Aires to Panamá, the flight crashed in the Andes mountains on 19/JUN/1938, it was lost for many years and then salvaged. The covers bear 2 different marks with the same text: "Mail recovered from Panagra P.30 airplane lost in Chile, in the Andes mountains, on 19 June 1938. Santiago, February 1941", rare group! (Image)

Envelope with fancy advertising of wholesale store J. Roger Balet, used in Buenos Aires on 9/AP/1943 with meter postage for 5c., very interesting! (Image)

Registered cover used in Mendoza on 17/SE/1954 with postal franchise of the EVA PERÓN FOUNDATION, with rectangular mark "EVA PERÓN FOUNDATION - Each Argentine has a role to play in the 2nd QUINQUENNIAL PLAN: Their duty is to learn it and fulfill it - PERÓN - SUPPORT HIM", VF quality, rare! (Image)