GJ.35A, with variety "very tall stamp, with part of printer imprint" (sheet margin), VF and rare! (Image)

GJ.38, on fragment with complete barred "G" oval of GUALEGUAYCHÚ, superb! (Image)

GJ.38, on fragment with complete rimless datestamp of CONCEPCIÓN DEL URUGUAY, superb! (Image)

GJ.38, pair on fragment with complete rococo cancel of ANDALGALÁ perfectly applied, VF and very rare! (Image)

GJ.38, on fragment with complete double circle cancel of "ADMON DE CORREOS - CORDOBA" in green-blue, superb! (Image)

GJ.38, pair on fragment, with blue datestamp of CONCORDIA, superb! (Image)

GJ.38, on fragment with complete "ESTAFETA AMBULANTE - F.C.N. - (1)" cancel in double circle, excellent! (Image)

GJ.48, 1876 5c. Rivadavia rouletted, used with rare cancel of ESQUINA (Corrientes), VF quality! (Image)

GJ.54B, strip of 3 with red SPECIMEN overprint and punch hole, also violet cancel "RETURN TO...", very interesting! (Image)

GJ.55, 1877 24c. San Martín, block of 4 of excellent quality, the lower stamps MNH, very fresh, interesting light blue color, with printer imprint in the top margin, very handsome! (Image)

GJ.55 + 79 Franking a mourning cover sent to Italy on 18/NO/1883, with small circular datestamps of CHIVILCOY (2) and double circle, VF! (Image)

GJ.98, Velez Sarsfield 1c. sepia, MNH block of 6, superb! (Image)

GJ.99, 1889 1c. Velez Sársfield WITH WATERMARK GLOBES, MNH, excellent quality, catalog value US$150 + 50% (Image)

GJ.109, 8c. Rivadavia, mint block of 4 (2 stamps MNH) + used block of 4, excellent quality! (Image)

GJ.110 + 110A, 10c. Avellaneda, blocks of 4 in dun and dark dun, mint (each block with 2 MNH stamps), superb! (Image)

GJ.112, 40c. Moreno, PROOF in blue, block of 4 printed on thin paper, VF quality! (Image)

GJ.123, 2c. Derqui perforation 11½x12, lilac, beautiful block of 4 with 2 MNH stamps, superb! (Image)

5c. Rivadavia PS cover + GJ.137 pair + 138 strip x3 + 140 + 146 pair + 154 pair (perf 12) sent registered from ROSARIO to Austria on 15/APR/1894, superb, rare multicolored franking of 40c.! (Image)

GJ.182P, 24c. Belgrano with large sun wmk, IMPERFORATE PAIR, MNH, very fine and rare! (Image)

GJ.302CI, 1910 Centenary of the May Revolution 2c. with INVERTED CENTER, fantastic example WITHOUT DEFECTS, extremely rare in this excellent quality considering that 98% of known examples are defective because these errors, when they were discovered during the printing process, were discarded, the sheets crumpled (creased) and thrown away to the trash, from where a "kindhearted soul" rescued them! (Image)

GJ.471, beautiful block of 4 with DOUBLE vertical perforation at left, VF quality! (Image)

GJ.598a, 4c. San Martín, block of 4, the right stamps with COMPLETE DOUBLE IMPRESSION variety, excellent quality! (Image)

GJ.619, ribbed paper, mint block of 4 of VF quality, catalog value US$100. (Image)

GJ.770, 1P. Map printed on CHALKY PAPER, 12 examples + GJ.759 (50c. Petroleum), total postage $12.50 franking an airmail cover sent from Ramos Mejía to Spain on 4/NO/1944, on back transit mark of New York (15/NO) and Madrid arrival (24/NO) along Spanish censor marking, very fine quality, spectacular and very rare franking! (Image)

GJ.774AP, 10c. Rivadavia, national unsurfaced paper, IMPERFORATE BLOCK OF 4, VF quality! (Image)