GJ.49, Rivadavia 8c. rouletted, pair franking a folded cover sent from Buenos Aires to Cádiz (Spain) on 20/AP/1879 by steamer "La Francie, via Marseille", on back it bears marks of "Estafeta de Cambio" and arrival, VF quality! (Image)

GJ.61P, 1882 ½c. Little Envelope, IMPERFORATE PAIR, very lightly hinged (appears to be MNH), superb! (Image)

RARE POSTMARK OF PATAGONIA: GJ.126 (compound perf), large block of 8 with 2 perfectly applied cancels: "GRAL. PRINGLES - PATAGONIA" of 27/AU/1890, very attractive and scarce! (Image)

GJ.137/151 (without 142, color error), 1892 Tres Próceres with small sun watermark, the complete set of 14 values, very fine quality! (Image)

GJ.174, 1896 ½c. Rivadavia, used block of 4 with DOUBLE horizontal perforation, one stamp with small fault and the rest of very fine quality, very unusual variety in used! (Image)

GJ.217/238, 1899 Seated Liberty, the complete set of 22 mint examples, VF! (Image)

GJ.264, 1899 10c. Seated Liberty, block of 4 with COMPOUND PERFORATION 11½x12, excellent quality, extremely rare! (Image)

Circa 1910, 17 different ESSAYS of 2 unissued values, presented for the Centenary issue, several perforated, excellent quality, rare group, market value US$10 or more each, good opportunity! (Image)

GJ.332c, 1911 Plowman 10c. green, strip of 4, the 2nd stamp from the left WITHOUT WATERMARK, the 3rd one with barely some rays in, the 1st and 4th one are normal, extremely rare, there are only 10 similar strips in existence, this variety is very seldom seen, and when this piece gets sold many years will pass until a similar example is see again in the market! (Image)

RARE POSTMARK OF PATAGONIA: GJ.379, block of 4 with double circle datestamp of "PICHI MAHUIDA - RIO NEGRO", excellent quality! (Image)

GJ.403a, 1916 5c. Declaration of Independence, corner block of 4 that includes the VARIETY "double period after the 5" (position 1), MNH, excellent quality, rare. This variety is very scarce and its real value is much higher than the catalog value, it will corrected in the next edition. (Image)

GJ.427, 1917 4c. San Martín with vertical honeycomb wmk, perf 13½x12½, MNH block of 4 (+50%), superb! (Image)

GJ.542b, 1922 Postal Congress, with INVERTED watermark printed on front, perf 13½, MNH (+50%), rare, excellent quality! (Image)

GJ.597, 1924 3c. San Martín w/o period, rare complete sheet of 200 stamps, MNH, 5 with defects, the rest of excellent quality. It has an interesting variety in positions 21, 26, 36, 100, 126, 131 and 136: "Dot on the frame of the face value", very interesting! (Image)

GJ.605b, 30c. San Martín, used pair WITH AND WITHOUT PERIOD, rare! (Image)

GJ.610, 1924 24c. San Martín w/o period, perf 13½, MNH (+50%), very fine quality, rare! (Image)

GJ.800TH, 5c. Moreno, on chalky paper, pair with lined horizontal gutter WITH NUMBERS "1" and "2", excellent! (Image)

Booklet GJ.800A-A3-V, complete booklet of excellent quality, as fresh and perfect as the day it was issued, very rare! (Image)

GJ.823/830, 1939 UPU Congress, cmpl. set of 8 values with MUESTRA overprint, some with original gum, VF quality, rare! (Image)

GJ.836/838, 1939 Fonopost, color PROOFS, 5 different blocks of 4 (one printed on both sides), excellent quality, rare! (Image)

GJ.887, 5c. San Martín, block of 4 with END-OF-ROLL DOUBLE PAPER, excellent! (Image)

GJ.961, 1948 Commemoration of October 17 (Peronism), COLOR PROOFS, 12 different imperforate blocks of 4 printed in varied colors and papers, mounted on presentation sheet, excellent quality, very rare lot! (Image)

GJ.1013, 1952 2P. Eva Perón, block of 8 with INVISIBLE WATERMARK variety (not even visible with benzene, under a bright light, not even traces, nothing). Also in the top stamps there is another variety "ARGENTINA crossed out", excellent! (Image)

GJ.1050A, 3P. El Nihuel dam, corner block of 6 with large PAPER FOLDS, fantastic! (Image)

GJ.1102P + 1103P, 1958 Friendship with Bolivia (airplane, map, train), set of 2 IMPERFORATE PAIRS, very fine quality! (Image)