GJ.658, 1942 30c. on CHALKY paper, block of 6 with notable DOUBLE PERFORATION in the center, excellent quality, rare! (Image)

GJ.720/2, 1932 Zeppelin, complete set of 3 values + GJ.719, franking a cover flown by Zeppelin to Germany on 27/OC/1932, with Friedrichshafen arrival backstamp, VF quality! (Image)

GJ.720/2, 1932 Zeppelin, the complete set of 3 values + Congress of Cold Techniques, etc. franking a cover flown by Zeppelin to Germany on 27/SE/1932, with Friedrichshafen arrival backstamp, VF quality! (Image)

GJ.720/2, 1932 Zeppelin, complete set of 3 values + Congress of Cold Techniques, franking a cover flown by Zeppelin to Germany on 30/AU/1932, with Friedrichshafen arrival backstamp, VF quality! (Image)

GJ.720/2, 1932 Zeppelin, complete set of 3 values + Congress of Cold Techniques, franking a cover flown by Zeppelin to Germany on 14/SE/1932, with Friedrichshafen arrival backstamp, VF quality! (Image)

GJ.722b, 1932 Zeppelin 90c. in pair, one with "SOBPETASA" variety + other values, franking a cover flown by Zeppelin to Germany on 11/DE/1932, with arrival backstamp of Friedrichshafen, very fine quality. The value of the used stamps is US$120++ (Image)

GJ.846, 1940 50c. Mercury and airplane, 5 different color proofs, one in pair, very fine quality! (Image)

GJ.1117P, 1959 Jet airplane, IMPERFORATE PAIR, VF quality! (Image)

GJ.1254a + variety, 1963 11P. Stylized plane, strip of 3 with very shifted perforation variety: the central stamp is much narrower and without "ARGENTINA", the right stamp with "ARGENTINA" on the left, excellent! (Image)

GJ.1337Ab, 1965 12P. Stylized airplane, block of 4 with DOUBLE IMPRESSION of claret color (inscriptions and face value), 2 stamps with tiny hinge mark and 2 MNH, very fine quality! (Image)

GJ.1138A, 1965 15P. Airplane on glazed paper, pair with variety "printed on end-of-roll double paper", very fine quality and very rare in this stamp! (Image)

GJ.1434, 1967 78P. Stylized airplane, block of 4 with notable irregular impression of one stamp due to a pre-printed paper fold, excellent and unique! (Image)