Cover franked with GJ.296 alone, sent from Bahia Blanca to Germany, with arrival backstamp, VF! (Image)

Lot of 3 wrappers used in Delta del Tigre in 1934, with handstamps about protection of the environment, VF! (Image)

Registered cover franked with $1.90, sent from Buenos Aires to Switzerland on 11/DE/1931, transit marks of San Cristóbal (Panamá) and New York, VF! (Image)

Cover with commemorative cachet and violet handstamp of the "Centro Filatélico de La Plata", very nice! (Image)

PERONISM: Lot of cover + receipt of donation + thank you letter, sent by the Secretaría de Trabajo y Previsión, on behalf of Cnel. J.D. Perón, to a person who donated $5.00 M/N to a collection of 1944 for the northern provinces, interesting! (Image)

Cover franked with 10c (GJ.738 + 746) and posted on 21/FE/1951 with postmark of the 1st Panamerican Games, VF! (Image)

Cover sent from Intl. Philatelic Exhibition of 1958 to Germany, with handstamp of the expo, the postage includes 2 examples of GJ.HB 15, arrival backstamp, very nice (Image)

Cover sent from Paraná to Córdoba on 25/FE/1961, franked with $15 (GJ.1206/07 + other values) with first day postmark, on back signed manuscript inscription "Extraída del casillero simple con franqueo de expreso", VF (Image)

FIRST FLIGHT: Envelope with cachet of LUFTHANSA, with special cancel for first flight Buenos Aires - Frankfurt by JET 720-B for 22/MAY/1961 (Image)

TOPIC BOTANY: 6 covers / cards with special postmarks (Image)

FIRST FLIGHTS: Cover with commemorative postmark for "First Zeppelin flight Argentina - Germany" of 30/AU/1971, VF! (Image)

TOPIC FOOTBALL: FDC cover with commemorative postmark of Mexico 86 Football World Cup for 31/MAY/1986 (Image)

Cover with commemorative postmark of special flight 75th UPAE anniversary for 9/OC/1986 (Image)