Gral. San Martin Antarctic base: datestamp (21/FE/1959) on real photo PC of the station, VF quality (Image)

Esperanza Antarctic base - Fortín "Sargento Cabral": datestamp (24/FE/1986) on cover, VF (Image)

4c. Postal card sent to Buenos Aires on 9/AP/1885, with datestamp of CONCEPCIÓN DEL URUGUAY, VF quality (Image)

4c. Postal card sent to Buenos Aires on 26/JA/1886, with datestamp of ROSARIO, VF quality (Image)

4c. Postal card sent to Buenos Aires on 2/SE/1886, with rectangular datestamps of CONCORDIA and arrival mark, VF (Image)

4c. Lettercard sent from Buenos Aires to SAN URBANO (Córdoba) in JUL/1899, with fantastic arrival backstamp, VF quality (Image)

17 Covers used between 1900 and 1945, with varied cancels, VF quality (Image)

Newspaper "Los Debates" of 31/MAY/1909, sent from La Plata to Bragado franked with ½c. Seated LIberty (GJ.217), unfortunately punched, very rare! (Image)

Cover sent to Buenos Aires on 20/OC/1915, with datestamp of HURLINGHAM (B.A.), franked with 58c. Plowman, VF quality (Image)

Cover sent to Buenos Aires on 24/MAY/1916, with datestamp of JUAREZ (B.A.), franked with 5c. Plowman, good number of cancels on back (Image)

PC sent from B.Aires to Germany on 22/AP/1932 by Condor Zeppelin, franked with 77c., with Brazilian handstamp and Friedrichshafen arrival, VF (Image)

Cover franked with 45c. sent from B.Aires to Rio de Janeiro in JUL/1936, with Brazilian censor label and mark, VF (Image)

Auxiliary postal markings: 3 covers with marks "LLEGÓ TARDE", "MALA", "SIN GUIA" and "M", VF quality (Image)

Cover franked with 5c. and sent to Buenos Aires on 24/NO/1949, with datestamp of ARROYO RICO (Buenos Aires), and other transit marks, VF (Image)

Cover franked with 10c. and sent to Buenos Aires in 1950, with cancel of ESTHER (Buenos Aires), VF (Image)

Cover franked with 12c., sent to Buenos Aires on 3/JA/1950, with cancel of LA LAGUNA (Córodba), VF quality (Image)

Cover carried to Buenos Aires on 26/JA/1950, franked with 12c., and datestamped in TAMBRERÍAS (San Juan), VF (Image)

Cover carried to Buenos Aires on 11/FE/1950, franked with 11c., cancelled in BALCOSNA (Catamarca), VF (Image)

Cover franked with 10c., sent to Buenos Aires on 11/MAR/1950, with datestamp of LAVAISSE (San Luis), VF quality (Image)

Cover sent to Buenos Aires on 19/MAR/1950, franked with 10c., with datestamp of CRUCESITAS 3RA SECCIÓN (Entre Ríos), VF quality (Image)

Cover franked with 10c., sent to Buenos Aires on 7/AP/1950, with datestamp of LA LUZ (Buenos Aires), VF quality (Image)

Cover franked with 12c., sent to Buenos Aires on 26/AP/1950, and datestamped in LONDRES (Catamarca), VF (Image)

2 Covers sent to Buenos Aires on 6/JUN/1950, with datestamps of TIPILIUKE (Neuquén), VF quality (Image)

Cover franked with 10c. and sent to Buenos Aires 2/JUL/1950, with cancel of BALDE DE QUINES (San Luis), VF (Image)

Cover sent to Buenos Aires on 19/JUL/1950, franked with 12c., datestamped CHUCUMA (San Juan), VF quality (Image)