Official entire letter sent to Giles on 9/AP/1864, with rimless datestamp of BUENOS AIRES perfectly applied, excellent! (Image)

Official folded cover sent from San Fernando to Buenos Aires on 12/MAY/1864, with receiving mark: rimless datestamp of B.Aires, VF quality! (Image)

Official folded cover sent from Exaltación de la Cruz to Bragado, with transit mark "BUENOS AIRES +" for 22/JUN/1872, excellent! (Image)

Official entire letter sent from Quilmes to San Andrés de Giles, with attractive transit mark of Buenos Aires of 27/MAY/1873, excellent! (Image)

Entire letter sent to Buenos Aires with blue "ADMON DE CORREOS - TANDIL" double circle, and arrival mark of 22/JA/1874, rare, excellent quality! (Image)

Entire letter sent to San Andrés de Giles on 13/SE/1875, with small "LUJÁN" datestamp with Maltese cross in VIOLET + traveling "E.AMB.F.C.O.B.A." datestamp, excellent quality! (Image)

Official entire letter sent to San Andrés de Giles on 23/JA/1877, with a rare datestamp of AZUL in small circle and 2 transit marks of Buenos Aires, excellent! (Image)

Official cover sent from the civil registry of Coronel Suárez to La Plata in JUL/1891, with several due marks for insufficient postage, and on back cancels of 7/JUL: "ADMINISTRACIÓN DE CORREOS - FERRARI" (very rare), and arrival mark of the same day, VF! (Image)

2/SE/1917 Buenos Aires - Montevideo, 5c. postal card flown on "first intl. airmail between Buenos Aires and Montevideo" by pilot Teodoro Fels, excellent quality, rare! (Image)

1/NO/1929 Buenos Aires - Comodoro Rivadavia, first flight of Aeroposta Argentina S.A., arrival backstamp, excellent quality. (Image)

Entire letter with long and interesting commercial text, sent to Montevideo on 17/SE/1808, with the 2-line mark "BUENOS AYRES" very well applied, excellent quality! (Image)

Long entire letter written in French and sent to Mendoza on 8/JUL/1821, with the 2-line "BUENOS AYRES" mark perfectly applied, also "3" rating in pen, excellent quality! (Image)

Entire letter with attractive commertial text about a sale of quicklime, sent to Buenos Aires on 14/FE/1815, with the straightline CORDOBA mark in red (GJ.CBA 2) very well applied, and "3" rating in pen, very fine quality, signed by Victor Kneitschel. (Image)

Circa 1800, 2 fronts of folded covers sent to Santiago de Chile with "1½" and "2½" ratings (Reales) in pen, and also red straightline "MENDOSA" mark (GJ.MEN 2) very well applied, excellent lot! (Image)

Front of folded cover sent to Mendoza with the mark "Sn LUIS" (GJ.SLU 1) in red-chestnut very well applied, also "2" rating in pen, very fine quality! Signed by Alberto Solari (Image)

Folded cover sent from Bragado to Buenos Aires on 27/JUN/1857, with the marks "MENSAGERIAS ARGENTINAS" illustrated with stagecoach in oval + straightline "FRANCA" (GJ.MSJ 70 + 72), excellent quality! Signed by Alberto Solari (Image)

Complete folded cover sent from CHASCOMÚS to Buenos Aires in SEP/1863 by stagecoach mail, with the greenish blue mark: "MENSAGERIAS ESPAÑOLA-AMERICANA - TORRES Y Cia. - POTOSI Nº146" (GJ.MSJ 97) perfectly applied; in Buenos Aires it was dispatched via the Post to its final destination, with arrival rimless datestamp of 24/SE/6 (the date is written inside, 1863), excellent quality, very rare! With Alberto Solari certificate. (Image)