4c. Postal card sent from Corrientes to Buenos Aires on 25/AU/1884, with rectangular cancel and arrival marks (Image)

1½c. Lettercard (VK.3) uprated with ¼ on 12c. Alberdi black overprint perf 11½x12 (GJ.133) + ¼ on 12c. Alberdi red ovpt perf 11½x12 (GJ.134) (total postage 2c.), used in Buenos Aires on 29/AU/1890, VF quality (Image)

Postal card sent from "ARRECIFES" (Buenos Aires) to Buenos Aires city on 27/FE/1897, VF quality (Image)

Cover sent to Temperley on 26/SE/1909, franked with 5c. with datestamp of CAMPO DE MAYO, VF (Image)

Postcard sent from Mendoza to Buenos Aires on 9/DE/1911, franked with 5c. Plowman (GJ.317), with view of Hotel Puente del Inca, worn borders (Image)

Dispatch note of parcel post of up to 1 kilo sent from Buenos Aires to Berutti on 24/AP/1913, with arrival backstamp. (Image)

Cover with advertising corner card used on 18/JUN/1920, franked with 5c. San Martin with multiple suns wmk, with slogan cancel "Centenary of the death of Belgrano", VF (Image)

Airmail cover used in Buenos Aires on 21/JA/1931, franked with 35c., cancelled "PUERTO SANTA CRUZ - TELEGRAFO DE LA NACION", VF quality (Image)

4/FE/1933: Buenos Aires - Berlin, airmail cover franked with 15c. and $1 airmail (Image)

Airmail cover (cut with missing flap) sent from Buenos Aires to Dresden (Germany) on 22/JUL/1933, franked with $2.15 (Image)

Airmail cover sent from Buenos Aires to Berlin on 15/DE/1933, franked with $1.15, VF quality (Image)

Cover flown by Zeppelin from Buenos Aires to Zurich (Switzerland) on 29/JUN/1934 on the 3rd flight of the year, franked with 5c, 10c. and $1 San Martín (total $1.15), with transit mark of Friedrichshfen (Image)

Cover sent from Buenos Aires to Santiago (Chile) on 3/DE/1935, franked with 30 and 50c. San Martín + 5c. Moreno (total 85c.), VF quality, good MIXED POSTAGE of San Martin w/o period + Próceres & Riquezas! (Image)

Stationery envelope mailed on 2/SE/1937 with postmark of "ROSARIO - AGENC. 1" to La Plata, VF quality (Image)

Registered cover sent from Mendoza to New York on 22/AU/1938, franked with $8.55 (10 stamps), very nice (Image)

Registered cover with corner card of "City Hotel - Buenos Aires", sent from Buenos Aires to Geneve (Switzerland) on 28/AP/1939, franked with 40c., VF (Image)

Airmail cover sent from Buenos Aires to England via New York on 29/AU/1940, franked with 12 (torn) and 40c. Próceres & Riquezas + 1.18P. Fonopost (total $1.70), censored (Image)

Airmail cover sent to Bern (Switzerland) on 11/JA/1941 by Condor Lati, franked with 20c. Güemes + $1.25 airmail (total $1.45), cancelled in LOS COCOS (Córdoba), VF (Image)

Airmail cover sent from Buenos Aires to Marseille (France) on 24/JA/1942, franked with 40c. Sugar cane + 30c. and $1 airmail (total $1.70), with double censor label (British and French), VF quality (Image)

Airmail cover sent from Buenos Aires to Herisau (Switzerland) on 27/JA/1942, franked with 40c. Sugar cane + 20c. Mausoleum of Rivadavia (total 60c.), VF (Image)

Airmail cover sent from Buenos Aires to Switzerland on 17/JUL/1942, franked with 40c. and $1 Próceres & Riquezas + 5c. Estrada (total $1.45), it was held at the office of censorship, VF quality (Image)

5c. Stationery envelope uprated with 30c., sent to Buenos Aires on 1/AU/1942, with datestamp of CALETA OLIVIA (Santa Cruz) and transit mark of Comodoro Rivadavia (Chubut), VF (Image)

Airmail cover sent from Buenos Aires to Guaxupe (Brazil) on 29/AU/1942, franked with 3x 15c. and 20c. Próceres & Riquezas (total 65c.), with Brazilian censor marks, VF (Image)

Cover with advertising for restaurant & bar, with postmark of "BOCA DEL TORO" (Buenos Aires) (Image)

Airmail cover sent from Buenos Aires to Mazamet (France) on 18/JA/1943, franked with $1.70, and held at the office of censorship, VF (Image)