Official stamp without face value, proof in brown, on thick glazed paper, block of 4, with creased corner (Image)

Official stamp without face value, 2 proofs in blue and slate blue, on thick glazed paper, blocks of 4, VF (Image)

GJ.159, 2c. San Martín, M.G. overprint, Wheatley Bond wmk, VF quality, MNH (+50%) (Image)

GJ.167, 12c. San Martín, M.G. overprint, fiscal sun wmk, VF quality (Image)

GJ.169, 2c. San Martín, M.G. overprint, round sun wmk, VF (Image)

GJ.172, 2c. San Martín, M.G. overprint, round sun wmk printed on the stamp, sheet margin, MNH, VF (Image)

GJ.182, 1c. San Martín w/o period, M.G. overprint, VF (Image)

GJ.188, 30c. San Martín w/o period, M.G. overprint, VF (Image)

GJ.194, 10c. San Martín, M.G. overprint in serif font, variety: Offset impression of the ovpt. on back, VF (Image)

GJ.197, 1P. San Martín, M.G. overprint in serif font, VF (Image)

GJ.199, 20c. San Martín, typographed, M.G. overprint in serif font, VF (Image)

GJ.201/12, Próceres & Riquezas, cmpl. set of 12 values in blocks of 4, a few with stain spots. (Image)

GJ.209, 30c. Wool, with variety "G and period joined", used, VF quality (Image)

GJ.210, 50c. Petroleum/oil, with variety "G broken", used, VF quality (Image)

GJ.213, 5c. Moreno, typographed, with light "M.G." overprint, along a normal example for comparison, used, VF quality (Image)

GJ.217, 2c. Plowman, sun wmk, nice block of 4, VF quality (Image)

GJ.218a, 1c. Plowman, vertical honeycomb wmk, Germany paper, block of 4, one with variety "H without period", unused, no gum, VF quality (Image)

GJ.219, 2c. Plowman, vertical honeycomb wmk, block of 8 stamps with variety "M defective", MNH, VF quality (Image)

GJ.226, 2c. Plowman, unwatermarked, block of 4, one with "M broken" variety, VF quality (Image)

GJ.226/7, Plowman, unwatermarked, cmpl. set of 2 values in blocks of 4, VF quality (Image)

GJ.227, 5c. Plowman, unwatermarked, the overprint "M.H." in the top stamps was applied higher than in the lower stamps, gum darkened in some areas (Image)

GJ.247b, 5c. San Martín, with period after the value, perf 13¼x12½, with variety ovpt "M.H." inverted, used, VF quality (Image)

GJ.261, 3c. San Martín w/o period, "M.H." ovpt in serif font, unused, no gum, rare! (Image)

GJ.446, 10c. Rivadavia, M.J.I. overprint, type I, VF (Image)

GJ.493, 5c. San Martín w/o period, block of 4 with datestamp of PUERTO SANTA CRUZ, VF quality (Image)