GJ.16, with INVERTED overprint (not catalogued), used in "Sucursal Norte (B.A.)" on 18/MAR/1885, very rare! (Image)

GJ.168a, with VARIETY: double overprint, VF (Image)

GJ.184b, pair, one with VARIETY: "G" without period (Image)

GJ.185d + 185f, 2 pairs, one with example "M without period", and one in the other "G without period" (Image)

GJ.186b, pair, one with VARIETY: "G" without period (Image)

GJ.247b, with VARIETY: inverted ovpt, VF (Image)

GJ.278a, with VARIETY: Longer border line (Image)

GJ.302, block of 4 with multiple suns wmk, 2 lightly hinged and 2 MNH (Image)

GJ.318, in block of 4 with control mark, VF (Image)

GJ.412e, 2 blocks of 4, one example in each block with VARIETY: "M" without period, one of them with broken "M" (Image)

GJ.412f+g, strip of 3, VARIETIES: central example "J" without period, right stamp "J" and "I" w/o period, and the strip shows 2 large ink spots (Image)

GJ.415g, pair, one with VARIETY: "I" without period (Image)

GJ.421, scarce example (Image)

GJ.442a, 30c Wool, pair, both stamps with DOUBLE IMPRESSION of the overprint (one faint), VF! (Image)

GJ.479/80, cmpl. set with round sun wmk, very fresh gum, superb! (Image)

GJ.495, block of 4 printed on ribbed paper, 2 lightly hinged and 2 MNH, excellent! (Image)

GJ.505 + other examples, 6 values of the set, all with "M..M" variety, VF! (Image)

GJ.505/508, the 4 low values of the set with "M..M" variety, VF! (Image)

GJ.516, marginal pair, one with "M..M" variety, VF (Image)

GJ.532, with multiple suns wmk, rare! (Image)

GJ.544a, pair WITH and WITHOUT period (Image)

GJ.574, with sun wmk, VF quality (Image)

GJ.595, with VARIETY: "2" with large head, along a normal example for comparison, it is rare to find this variety on an official stamp! (Image)

GJ.604, block of 4, one with VARIETY: "M.R.G.", the stamp with the variety is MNH (Image)

GJ.774A, marginal block of 4, with handstamped "SERVICIO OFICIAL" ovpt in red, light staining, interesting (Image)