GJ.845/48, on FDC cover, VF quality (Image)

GJ.848a, with VARIETY: Telegraph lines, VF (Image)

GJ.848a + 848b, very nice block of 4 with VARIETIES: Telegraph lines (pos.18) + spot above the cockpit (pos.9), excellent (Image)

GJ.857P, imperforate pair, VF (Image)

GJ.857P, imperforate pair (Image)

GJ.996, block of 4, one with variety: Retouch in the background over the second "O" of CORREO (pos.1) (Image)

GJ.996, 4 PROOFS on glazed paper in different colors (Image)

GJ.1072a, corner block of 4, 2 with varieties: White spot in front of the face (pos.1) + plate flaw (line over "NTIN" of ARGENTINA, pos.2), rare! (Image)

GJ.1089A, on glazed paper, excellent quality (Image)

GJ.1117, pair with variety: Dramatically shifted perforation, VF (Image)

GJ.1254, with VARIETY: spot on the left wing, VF (Image)

GJ.1254, with VARIETY: very shifted perforation (Image)

GJ.1255, block of 4 (mint without gum) + single (used) with attractive varieties: Shifted perforation and the block with DOUBLE IMPRESSION OF RED COLOR (lightly overlapping) (Image)

GJ.1256, with VARIETY: Spot on the left wing, VF (Image)