GJ.71, INCOMPLETE SURCHARGE variety, spectacular and VF! (Image)

GJ.235CI, 1899 1P. Liberty seated with CENTER INVERTED variety, excellent quality, very rare. Signed by Victor Kneitschel on back. (Image)

GJ.569EV, 1923 12c. San Martín with period, block of 8 stamps with two VERTICAL GUTTERS + also 2 RIGHT LABELS, VF quality, rare! NOTE: The catalog value of the gutter block of 4 is US$200 + 50% (MNH), good opportunity! (Image)

GJ.600EV, 1924 10c. San Martín, block of 12 stamps and 2 vertical gutters, with all its sheet margins (thus prepared for postage booklets or books), MNH, very nice (with light crease in 2 stamps else superb), rare, catalog value US$500 + 50% (MNH) (Image)

GJ:600A, 1924 San Martín 10c. OLIVE GREEN, MNH (+50%), VF quality! (Image)

GJ.655, 1928 Argentina-Brazil peace, set of 2 values overprinted MUESTRA, the 5c. value also with LABEL AT TOP (rare) (Image)

GJ.723/5, 1932 Cold Techniques Congress, set of 3 values, VF quality (the high value is never hinged), catalog value US$11+ (Image)

Die essay of an unissued design, circa 1935, for a stamp of 15c. (topic IMMIGRANTS), engraved by the American Bank Note Co. on thin paper glued to card, excellent quality, rare! (Image)

RECENT FIND: GJ.792a, 2P. Fruit with sun with STRAIGHT RAYS watermark and DOUBLE IMPRESSION OF THE CENTER, not yet catalogued and it will be included in the next edition of the GJ catalog, MNH, superb! It also has an additional variety: Small line below "TI" (Image)

GJ.1135, 1959/64 2P. Sarmiento (teacher, politician) printed on national unsurfaced paper, pair with spectacular perforation variety! (Image)

GJ.1871A, 1979/82 800P. Cockade printed on FLUORESCENT UNSURFACED PAPER instead of the normal phosphorescent chalky paper, strip of 3 stamps + label. The label and the left stamp are printed on normal phosphorescent chalky paper, and the other two on FLUOR UNSURFACED paper, from a rare end-of-roll piece, only 10 similar strips are known, excellent quality, extremely rare! (Image)

GJ.2592A, 1992/4 Mushroom 25c. WITH Casa de Moneda watermark, pair franking a printed matter from Bahía Blanca to Buenos Aires, VF and rare! (Image)

Booklet GJ.2931, 1999 Postman, printer's PROOF in black, imperforate (not die-cut) and without face values, excellent quality, very rare! (Image)

Booklet GJ.2931, 1999 Postman, printer's PROOF in cyan and black, imperforate (not die-cut), excellent quality, very rare! (Image)

Sc.1/19, 1939 complete set of 19 values franking a registered and express cover sent from Praha to Argentina on 15/JUL/1939 (first day of issue), very fine quality! (Image)

Sc.252/5 + 260, 1939 Fauna, large MNH blocks, 50 stamps of the first 3 values, 34 of 15c., and 40 of 45c., all perfect and of excellent quality. Catalog value US$427, good opportunity! (Image)

Fragment of cover with 2 stamps of 300Rs. (RHM.167) and datestamp of BAHIA + rare "negative" ship cancel in violet, VF quality! (Image)

Yvert 1394/9, 1997 Rocks and minerals, cpl. set of 5 values on a beautiful FDC cover, VF quality! (Image)

Edifil 874, 1939 70c. Franco with uncatalogued COMPLETE DOUBLE IMPRESSION variety + other values on registered airmail cover sent from Valencia to Argentina on 13/AU/1948, very attractive! (Image)

Sc.1994, 1976 Blood donation, 2 examples in VERY DIFFERENT SHADES, MNH, VF quality! (Image)

Sc.427, 1914 5c. orange with "GOBIERNO CONSTITUCIONALISTA" overprint, complete MNH sheet of 100 stamps (some perfs reinforced with hinge), very fine quality! (Image)

Yvert 431, 1955 Telescope, color proof in imperforate strip of 5, tiny defect, excellent appearance, low start! (Image)

Issue commemorating North Cape, with special postmarks, stamps on a souvenir certificate for sailing along the cape, VF quality (Image)

Sc.275, 1927/38 10c. blue, complete sheet of 50 IMPERFORATE HORIZONTALLY, MNH, VF quality! (Image)

Sc.275, 1927/38 10c. blue, complete sheet of 50 IMPERFORATE VERTICALLY, MNH, VF quality! (Image)