GJ.847, block of 4 with variety: STRONGLY SHIFTED PERFORATION, fantastic and excellent quality! (Image)

GJ.1162A, 1960 Partridge printed on IMPORTED UNSURFACED paper, used with first day postmark, excellent quality, catalog value US$100. (Image)

GJ.11, IN Ps. blue, type 39, WITH VARIETY: large ink spot below the ship, fine quality, interesting! (Image)

GJ.21g, 1P. rose, with variety: "Top right angle incomplete" (position 12), excellent quality! (Image)

MARIE CURIE, discoverer of radium, used in cancer treatment, MNH block of 6, VF quality! (Image)

Book: ROSASCO, Enrique: Los sellos de la Confederación Argentina, 267 pages, very useful book for the collector interested in studying this issue in depth! (Image)

GJ.1/6 + 1d, 1e, GJ.2 in two shades, and 5A, the complete set + some varieties, excellent quality, several MNH, superb! (Image)

GJ.1e, "double period after CENTAV", with spectacular wreathed SALTA-FRANCA cancel, excellent quality, signed by Solari (Image)

GJ.1e, "double period after CENTAV", with spectacular green-blue FRANCA cancel of San Luis in oval (+300%), superb, signed by Solari (Image)

GJ.2BID, 10c. green, diagonal bisect used as 5c. on fragment, with ellipse ROSARIO - FRANCA cancel, VF quality, signed by Alberto Solari on back! (Image)

GJ.3, 15c. blue, with ellipse MENDOZA - FRANCA cancel (+50%), VF quality, signed by Alberto Solari on back! (Image)

GJ.6b, 15c. blue, large figures, with variety: "Bottom Greek pattern incomplete", VF! (Image)

GJ.7, 5c. rose, used in Rosario, VF quality! (Image)

GJ.7, 5c. rose, with ellipse MENDOZA-FRANCA cancel, superb! (Image)

GJ.7A, 5c. orangish rose, used in Rosario, VF! (Image)

GJ.9, 15c. green-blue, used with light strike of blue cancel, 4 complete margins, good example! (Image)

GJ.10, 5c. rose without accent, pair with complete cancel of CONCORDIA, small thin on back and just margins, but very nice! (Image)

GJ.14, 5c. worn plate, an example of excellent quality! (Image)

GJ.15, 5c. narrow C, used in Rosario, with a soft vertical crease else excellent! (Image)

GJ.8, 10c. yellow-green, used, VF quality! (Image)

GJ.15, 5c. narrow C, rose-red, beautiful example used in Rosario, VF! (Image)

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)