EXTREMELY RARE FREE FRANK for mail sent from the "Campamento de Repatriación de Prisioneros de la Guerra del Chaco" in FORMOSA: Cover of the prisoner-of-war camp sent to Martínez (Buenos Aires) on 18/JUN/1936, with varied marks on front and back, excellent quality, very rare! (Image)

Tag of parcel post that contained SAMPLES WITHOUT VALUE used in B.Aires (circa 1936), with special rate of 7c., VF quality, rare! (Image)

Cover containing SAMPLES WITHOUT VALUE sent by registered mail from B.Aires to Belgium on 10/MAR/1937 with special rate of 4.26P., one stamp with defect else very fine, rare! (Image)

Cover with DECLARED VALUE of "10 Pesos" sent from B.Aires to Germany on 21/MAY/1937 franked with 58c. On back there are varied marks, label and WAX MARKS with Nazi symbols, all applied by the German post, rare, excellent quality! (Image)

Airmail cover sent on 10/JUN/1937 by Condor airline from Buenos Aires to reach a passenger aboard STEAMER OCEANIA in its stop in Pernambuco, arrival backstamp, very nice! (Image)

15/OC/1937 Buenos Aires Hamburg (Germany), registered/express airmail cover, on back it bears a number of cancels, apparently the addressee could not be located, interesting! (Image)

Cover with DECLARED VALUE of "200 Pesos m/n" sent from San Martín to Italy by ship "S.S. Oceania" on 25/FE/1938 franked with 1.18P. (the 3c. San Martín defective), with varied transit and arrival marks on back, VF quality! (Image)

5/AP/1938 Buenos Aires - Germany, registered airmail cover, with special rate for "commercial papers", total 2.85P., very nice! (Image)

Cover that contained samples without value sent from B.Aires to Santiago de Chile on 19/AP/1938 by registered airmail, with special rate of 5.50P., VF quality, rare! (Image)

27/AU/1938 Buenos Aires - Germany: Registered airmail cover with special rate for "commercial papers", total 1.62P., very fine quality! (Image)

21/MAR/1939: Buenos Aires - Klosterneuburg (Germany), registered cover franked with 29c. (rare rate of SAMPLES WITHOUT VALUE) sent by ship "Augustus", VF quality (Image)

17/AU/1940 Buenos Aires - France, airmail cover sent by "PANAGRA - via New York - Lisboa" and returned to sender because the destination place was occupied by Germany, very fine quality! (Image)

18/OC/1940 Villa María - France, cover with 15c. postage and due marks, RETURNED TO SENDER because communications with the destination were interrupted due to World War II, with violet handstamps: "RETOUR A L´ENVOYEUR - RELATIONS POSTALES - INTERROPUES", and British censor label, very interesting! (Image)

RETURNED TO SENDER: 11 Covers sent in varied periods to various destinations, all with attractive return marks! IMPORTANT: Please view ALL the photos of the lot, because all the covers have been scanned (both sides) (Image)

3 Covers used between 1941 and 1962 franked with REVENUE stamps or CINDERELLAS, some with small defects but interesting! (Image)

22/JA/1941 Buenos Aires - Italy, airmail cover sent by LATI franked with 2.70P. including a 20c. Güemes with "NBI" perfin (Nuevo Banco Italiano), VF! (Image)

9/AP/1941 Buenos Aires - Germany, airmail cover by Condor-LATI, on arrival it received an attractive OKW censorship, VF quality! (Image)

14/AP/1941 ESTAFETA MARÍTIMA 2 - Brazil, airmail cover franked with 45c., interesting postmark! (Image)

5 Airmail covers sent to Belgium, Portugal, Spain, Italy and Denmark in 1941, almost all by "Condor-LATI", some censored, interesting! (Image)

ROMANIAN CENSOR: Airmail cover sent from B.Aires to Bucharest "via Condor-LATI" on 4/JUN/1941, on back it bears an arrival mark and Romania censor label, very unusual! (Image)

SPECIAL RATE: Airmail cover (by LATI) sent from B.Aires to Germany on 20/SE/1941 franked with 1.45P. (reduced rate for "papeles de negocio"), on front Nazi censor mark, interesting! (Image)

3/OC/1941 Bahía Blanca - Germany, registered airmail cover by "Condor-LATI", Nazi censor label, and Bremen arrival mark 17/OC, VF quality (Image)

Extremely rare advertising card of a stamp dealer of 1940s (Marcos Rachitoff), used in Buenos Aires (circa late 1941) with mark "FRANQUEO PAGADO - IMPRESOS DIFERIDOS", VF quality! (Image)

Cover with SAMPLE WITHOUT VALUE sent by express mail from B.Aires to Ranqueles on 11/NO/1943 with special rate of 35c., VF and rare! (Image)

6 Covers sent in 1945 to Buenos Aires from Goya, Montecaseros, Santo Tomé, Colonia Yeruá and Corrientes, all franked with 5c. for surface mail but they were carried by plane as advertising, with marks "POR AVIÓN - LINEAS AEREAS DEL ESTADO - UTILICE SUS SERVICIOS", very interesting! (Image)