Sc.C2 + C3, lot of used examples, possibly with interesting cancels. It includes several pairs, 4 of them IMPERFORATE HORIZONTALLY, very interesting lot! (Image)

GJ.636, 5c. Biplane flying over the globe, 2 PROOFS in the issued color, one printed on chalky cardstock and the other one on thin unsurfaced paper (not catalogued by Kneitschel), VF and rare lot! (Image)

GJ.654, 1928 3.60P., high value of the first airmail issue + 24c. San Martín w/o period, franking a registered airmail cover sent to France in 1928, excellent quality! (Image)

GJ.665/669, 1930 Zeppelin with GREEN overprint, complete set of 5 mint value, VF quality, catalog value US$700. (Image)

GJ.667, 1930 90c. Zeppelin with green overprint, beautiful block of 10 (right part of the sheet), one with variety: "Retouch in the lined background, between the R and E of SOBRETASA", the top block of 4 is almost separated from the rest and reinforced with a small hinge, else excellent! (Image)

GJ.720/722 + 720A, 1932 Zeppelin, the set of 3 values + color variety of 18c. LILAC (GJ.721A), mint lightly hinged, VF quality! (Image)

GJ.720/722, 1932 Zeppelin, complete set of 3 values (some in pairs) + set of Congress of Cold Techniques, sent to Germany on the 1st ZEPPELIN flight of September 1932, with Friedrichshafen arrival backstamp, VF. (Image)

GJ.848, 1940 1.25P. Airplane, block of 4 printed on END-OF-ROLL JOINED PAPER, excellent quality, very rare in this set! (Image)

GJ.962, 1948 Congresso of Cartography, PROOF in chestnut, printed on thick perforated paper, rare! (Image)

GJ.1255, 1963 Stylized Airplane 18P. with DOUBLE IMPRESSION of red color and "AÉREO" (with accent!), VF quality, rare! (Image)

Sc.C32/C46, 1935 complete set of 15 MNH values, very fine quality! (Image)

Sc.C18, 1930 1B. with golden overprint, excellent quality! (Image)

Sc.C52/C62, 1937 the complete set of 11 overprinted values franking a registered cover to USA. The cover has small defects, the stamps are of excellent quality! (Image)

Yvert 59/62, 1941 Boat in Titicaca lake & condor, cmpl. set of 4 mint values, VF quality! (Image)

Sc.C165, 1951 San Martín crossing the Andes (horses, mountains, dogs), die proof in violet, excellent quality, extremely rare! (Image)

Sc.C3, 1950 300Mk. blue, beautiful block of 8 on fragment with postmark of Helsinki 28/NO/1953, VF! (Image)

Yvert 1, 1927 50c. violet, first printing, ONLY KNOWN COMPLETE SHEET, mint with original gum (some with hinge marks, many are never hinged). Some examples with defects and stain points, VF appeal, GREAT RARITY of world aerophilately! (Image)

Yvert 71/74, 1948 London Olympic games, set of 4 values, mint very lightly hinged (they appear MNH), excellent quality! (Image)

Yvert 22/26, 1931 Zeppelin, the stamps of 15k. and 50k. with COMPOUND PERFORATION 10½x12, very fine quality! (Image)