GJ.19, 2nd printing (worn impression) in notable color produced by the oxidation of the ink, franking a folded cover to Buenos Aires, with blue ellipse cancel of SAN JUAN, excellent! (Image)

GJ.19k, with variety: Lower right angle incomplete, position 48, on a fragment with OM cancel, superb! (Image)

GJ.20, 3rd printing, with railway PO cancel 'Estafeta Ambulante del F.C. del S.', rare, excellent quality! (Image)

GJ.20, 3rd printing, orangish ocher-dun, on fragment used in Buenos Aires on 6/JUL/1865, superb! (Image)

GJ.24, 15c. worn impression, green-blue, superb example! (Image)

GJ.24, 15c. worn impression, absolutely superb example franking a folded cover sent from Rosario to Buenos Aires on 2/JUL/1866, excellent quality! (Image)

GJ.25, 4th printing, dark rose, on fragment with Buenos Aires cancel of 1/JUL/1866 with VARIETY: the month is reversed, VF! (Image)

GJ.25, 5th printing, 'craquelé' impression, on fragment with Buenos Aires cancel of 4/OC/1866, superb! (Image)

GJ.28A, 6th printing perforated, orangish dun-red, WITH SHEET MARGIN at left (rare), and rimless datestamp of Concepción del Uruguay 2/AU/1867, superb! (Image)