GJ.13 + 13a, 1c. Little Envelope, normal and inverted overprint, unused, without gum, VF (Image)

GJ.31, 4c. Moreno, red overprint, block of 4, VF (Image)

GJ.33A, 60c. Posadas, carmine-rose overprint (aniline), VF (Image)

GJ.43, 5c. Oficial, perf 12¼, VF quality (Image)

GJ.187a, 20c. San Martín w/o period, M.G., double overprint variety, one light, used, VF (Image)

GJ.239, 1c. San Martín, M.H. ovpt, block of 4 with multiple suns wmk, VF (Image)

GJ.260, 12c. Post Centenary, M.H., used, VF (Image)

GJ.300, Ministerio del Interior, 5c. San Martín, Serra Bond wmk, perf 13¼, used, VF (Image)

GJ.368, 2c. San Martín, M.J.I., vertical honeycomb wmk, perf 13¼x12½, block of 4, VF (Image)

GJ.371, 2c. San Martín, M.J.I., vertical honeycomb wmk, perf 13¼, block of 4, VF (Image)

GJ.491b, 1c. San Martín w/o period, M.M., with variety: first stroke of the "M" cut diagonally, VF (Image)

GJ.546, 12c. San Martín w/o period, M.O.P., unused, without gum, VF (Image)

GJ.555, 1P. San Martín, M.O.P., serif font, used, VF (Image)

GJ.556, 3c. San Martín, typographed, M.O.P., serif font, VF (Image)

GJ.581, 12c. Plowman, M.R.C., Italian paper with horiz honeycomb wmk, perf 13¼x12½, with sheet margin, VF (Image)

GJ.728, 20P. Mount Fitz Roy, overprint type X, MNH (Image)

GJ.816, 25c. Eva Perón, Presidencia de la Nación, used, VF (Image)