1c. Wrapper + 1c. Seated Liberty sent from La Plata to Buenos Aires on 19/DE/1902, VF quality (Image)

5c. Stationery envelope sent from BAYAUCA (B.A.) to Buenos Aires on 15/SE/1919, VF (Image)

Cover sent to Buenos Aires on 30/MAY/1940, with cancel of CATINZACO (La Rioja), franked with 5c. Moreno, VF (Image)

Cover sent from La Falda (Córdoba) to Buenos Aires on 15/JUL/1940, franked with 15c. including a 10c. cinderella, WITHOUT POSTAGE DUES, rare (Image)

5c. Stationery envelope sent to Buenos Aires on 26/JA/1942, with postmark of CABO RASO (Chubut) in red, very rare cancel of Patagonia (Image)

5c. Stationery + 5x 1c. Sarmiento, sent to Buenos Aires on 13/JA/1944, with cancel of CHELFORÓ (Río Negro), VF quality (Image)

Cover sent by airmail from CENTRO RÍO MAYO (Chubut) to Buenos Aires on 27/AU/1944, with spectacular postage of 35c. with 3 different stamps, VF quality (Image)

2 Covers + 1 lettercard sent to Buenos Aires between 1945-1958 with cancels of CABO DE LAS VÍRGENES (Santa Cruz), VF (Image)

3 Covers sent from CABO BLANCO (Santa Cruz) to Buenos Aires between 1945-1949, VF (Image)

Registered cover sent to Buenos Aires on 4/AU/1954, with postmark of BELLA VISTA (Corrientes), franked with 10c and 2x 50c. Eva Perón + 2x 20c. Bull (total postage $1.50), VF quality (Image)