RARE CANCEL: GJ.89, 1888 20c. "Kidd" franking a cover sent to the "Jewish Colonization Association" in Buenos Aires, with cancel of COLONIA MAURICIO, very fine quality (back flap missing), rare! (Image)

GJ.273, 1902 Port of Rosario, express cover sent from Rosario to Buenos Aires on 26/OC/1902 (first day of issue) franked with 40c. (GJ.273 x8), with the rare violet mark "ROSARIO POR EXPRESO Nº....", with some small faults but very attractive! (Image)

GJ.273, 1902 Port of Rosario, large block of 8 franking a registered cover sent from Rosario to Buenos Aires on 26/OC/1902 (FIRST DAY of issue), very attractive! (Image)

GJ.1041CD, San Martín 40c. WITH RIGHT LABEL, MNH, excellent quality, rare! (Image)

GJ.1284P, 1964 University of Córdoba in IMPERFORATE BLOCK OF 4, also another 3 imperf blocks in different colors (proofs), all MNH and of excellent quality! (Image)

GJ.1399P, 1966 Juan Bautista de La Salle, IMPERFORATE PAIR, rare! (Image)

GJ.1419P, 1967 Villa María 100 years, IMPERFORATE PAIR in different colors from the issued ones (proof), excellent quality, rare! (Image)

GJ.1421, 1967 Battle of Chacabuco, IMPERFORATE PAIR in carmine (proof), excellent quality, rare! (Image)

GJ.1443, 1968 WHO (children and logo), IMPERFORATE PAIR in red-chestnut and red (proof), excellent quality, rare! (Image)

GJ.1446P, 1968 Hospital Rawson, IMPERFORATE PAIR in red-chestnut (proof), excellent quality, rare! (Image)

GJ.1450P, 1968 Dr. Osvaldo Magnasco, imperforate pair in darker color than the issued one (possibly a proof), very fine quality, rare! (Image)

GJ.1461P, 1968 Chil paralysis, IMPERFORATE PAIR, mint without gum (as all known examples), excellent quality, very rare! (Image)

GJ.1464P + 1465P, 1968 Steel works, the set of 2 values in IMPERFORATE PAIRS, mint without gum as all known examples, very fine! (Image)

GJ.1469P, 1969 Human rights, IMPERFORATE PAIR, mint lightly hinged, very fine quality, rare! (Image)

GJ.1484P, 1969 Military school, IMPERFORATE PAIR, mint without gum as all examples in existence, very fine quality, rare! (Image)

GJ.1485, 1969 Gral. Pacheco, proof in claret color, imperforate pair printed on paper for specimens, MNH, excellent! (Image)

GJ.1529P, Basilica of Luján 18c., IMPERFORATE PAIR, MNH, excellent quality, rare! (Image)

GJ.1762P, Alte. Brown Antarctic base, IMPERFORATE PAIR, MNH, excellent quality! (Image)

GJ.1768A, 1977 Painting by Miguel Caride, printed on UV NEUTRAL UNSURFACED paper instead of phosphorescent chalky paper, MNH, very rare (only 35 mint examples and 10 on FDC are known) (Image)

GJ.1852P, Brown 5000P. IMPERFORATE PAIR, excellent quality, very rare (only a sheet of 50 is known, that is there are 25 pairs in existence!) (Image)

GJ.2054a + 2055a + 2056a, 1982 Churches, all with FACE VALUE OMITTED, excellent quality, rare group! (Image)

GJ.2120a, 1983 Instituto Nacional Sanmartiniano (Grand Bourg house) with FACE VALUE OMITTED, VF quality, very rare (25 examples in existence!) (Image)

GJ.2391b, 1988 Ushuaia with variety DOUBLE IMPRESSION OF BLACK COLOR, very fine quality! (Image)

GJ.2391P, 1988 Ushuaia, IMPERFORATE PAIR, very fine quality! (Image)

GJ.3703P, 2008/14 25c. Siku, GUTTER PAIR, very fine quality, rare! (Image)