GJ.7, 2c. Vicente López, diagonal ovpt., used, small defects, good front, rare! (Image)

GJ.34, 90c. Saavedra, FORGED red overprint, interesting for study (Image)

GJ.143, 1c. San Martín, M.G., vertical honeycomb wmk, perf 13¼x12½, VF (Image)

GJ.301, 1c. San Martín, M.I., multiple suns wmk, VF (Image)

GJ.321, 12c. San Martín, Ministry of the Interior, franking a registered cover sent to the Governor of the province of Buenos Aires, Mr Federico Martínez de Hoz, from Buenos Aires on 6/DE/1934, VF (Image)

GJ.352a, 5c. Plowman, M.J.I., German paper with vertical honeycomb wmk, perf 13¼x12½, double overprint variety, used, VF (Image)

GJ.384, 2c. San Martín, M.J.I., with Wheatley Bond wmk, VF (Image)

GJ.386, 12c. San Martín, M.J.I., with Wheatley Bond wmk, used, VF (Image)

GJ.480, 20c., M.M., round sun wmk, VF (Image)

GJ.524, 12c. Plowman, M.O.P., German paper with vertical honeycomb wmk, perf 13¼, used, VF (Image)

GJ.532, 12c. San Martín, M.O.P., multiple suns wmk, perf 13¼, VF (Image)

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

GJ.589, 2c. San Martín, M.R.C., round sun wmk, used, VF (Image)

GJ.636, 10c. Rivadavia, proof with INVERTED overprint, block of 4, VF (Image)

GJ.640b, 25c. Plowman, inverted overprint variety, corner block of 4, VF (Image)

GJ.702, 20P. Eva Perón, used, VF (Image)

GJ.745a, 3P. Zapata slope, glazed paper, inverted overprint variety, VF (Image)

20 Stamps with offset impression of the overprint on back, VF (Image)