GJ.650H, 1928 1P. printed on DUTCH PAPER, mint block of 4 of excellent quality (2 stamps MNH, +50%), very scarce! (Image)

GJ.651 + 651a, 1928 1.08P. printed on Austrian and English papers, MNH (+50%), excellent quality! (Image)

GJ.660, 1930 20c. blue overprint, MNH block of 4 (+50%), one with variety "N of ZEPPELIN broken", excellent quality! (Image)

GJ.661, 1930 Zeppelin 50c. blue overprint, fantastic MNH block of 9 (+50%), superb! (Image)

GJ.663, 1930 Zeppelin 1P. blue overprint, MNH block of 4 (+50%), superb! Catalog value US$378 (Image)

GJ.720, 1932 5c. Zeppelin, block of 4 with 2 VARIETIES: Offset impression of the overprints on back and "bottom stroke of the Z incomplete in the bottom stamps", MNH, VF! (Image)

GJ.720, 1932 5c. Zeppelin, corner block of 4 with 2 VARIETIES: Offset impression of the overprints on back and "Z of ZEPPELIN broken" (position 42), stamps MNH, very nice! (Image)

GJ.721, 1932 18c. Zeppelin, 2 blocks of 4 in different shades (one is lilacish violet), one with offset impression of the overprint on back, MNH (+30%), superb! (Image)

GJ.721 + 721A, 1932 Zeppelin, 2 corner blocks of 4 of 18c., one in the extremely rare LILAC color, MNH (+30%), with a few perforations of the sheet margin separated, excellent quality, spectacular! (Image)

GJ.722b, 1932 90c. Zeppelin, block of 4, one with "SOBPETASA" variety, very fine quality! (Image)

DIFFERENT PAPERS: GJ.848, 1940 1.25P. Airplane, large block of 18 with end-of-roll double paper, joining 2 different papers: With very visible watermark, bottom row, and with opaque watermark, top row, also the top stamps show a defective impression due to wear ("snowballs"), excellent quality, rare! (Image)

GJ.861a + 861b, 1941 1P. Stylized airplane, block of 4 with variety "1 joint to the frame" (position 4) and pair with "CORREC" variety (pos. 99), excellent quality! (Image)

GJ.1117P, 1959 Aerolíneas Argentinas airplane, IMPERFORATE PAIR, excellent quality! (Image)

GJ.1153a, 1959 Rowing with TORCH OMITTED variety, excellent quality, rare, undervalued in the catalog! (Image)

GJ.1154a, 1959 Swimmer with TORCH OMITTED variety, lightly hinged, very fine quality! (Image)