GJ.54 + 54A + 54B, over 200 stamps in pairs or singles, including a strip of 3, very fine general quality. There is a wide range of cancels (many railway cancels, pen cancels and more), good opportunity at low start! (Image)

GJ.135/136, 1892 Discovery of America, 2 die proofs with decree of the issue, printed on card, VF quality! (Image)

GJ.273, 1902 Port of Rosario, DIE PROOF printed on thin card, with glazed front, VF quality, rare! (Image)

GJ.300/15, 1910 Centenary of the May Revolution, 589 different COLOR PROOFS, printed on card and some on thin paper (very rare), neatly mounted on stockbook. Excellent group of very fine quality, low start (market value US$5/10 each!), good opportunity! (Image)

GJ.327, 1911 2c. Plowman with sun wmk, MNH, excellent quality, very fresh, catalog value US$20 + 50% (MNH) (Image)

GJ.1053ASG, 1954/7 5P. Iguazú Falls, PRINTED ON GUM variety, rare! (Image)

GJ.1401, 1966 General Las Heras, 4 different TRIAL COLOR PROOFS printed on original paper of the issue, excellent quality, very rare! (Image)

GJ.1419, 1967 Centenary of Villa María, cart, 4 different TRIAL COLOR PROOFS printed on original paper of the issue, excellent quality, very rare! (Image)

GJ.1424P, 1967 Military Navy School (school ship Gral. Brown), IMPERFORATE BLOCK OF 4 + 4 different imperf blocks (color progression proofs), MNH and of excellent quality, rare lot! (Image)

Sc.21a, 1883/1904 2p. bright purple, block of 4 of very fine quality, with tiny and barely visible hinge marks, very fresh and attractive! (Image)

Sc.105, 2 mint blocks of 4, DIFFERENT shades, excellent quality! (Image)

Sc.8, 1844/5 30R. black, vertical pair of excellent quality! (Image)

Lot of FDC covers and first day cards of many of the stamps issued in 1960/1962, a couple may have a minor defect, the general quality is VF! (Image)

Sc.69/76, 1910 complete set of 8 values with SPECIMEN overprint and punch hole, excellent quality, market value US$40 or more! (Image)

Yvert 130/143, 1953 Views of the territory, compl. set of 14 values, superb, catalog value Euros 250. (Image)

Sc.3, 1855 Grand Duke William 1Sg. rose, used PAIR, fine quality, very handsome, catalog value US$300. (Image)

Sc.242, 1895 Mailman 1c. IMPERFORATE, VF quality! (Image)

Sc.281d, 1898 Mailman 3c. without watermark and with compound perf 12x6, excellent! (Image)

Sc.287c, 1898 Mail coach 20c., without watermark and with compound perf 12x6, excellent! (Image)

Sc.442 (not catalogued in Yvert), 1915 5c. dark blue, used, very fine quality, very rare! (Image)

Sc.104/15, lot of 345 used stamps, many with interesting cancels (in blue and red, mute, and of some scarce towns), VF general quality, good lot, catalog value US$210+ (Image)

Sc.159 (Yvert 125), 1899 10S. blue-green, used, excellent quality, very rare. Yvert catalog value Euros 775. (Image)

Sc.1490, 2006 Centenary of Rotary Internacional, IMPERFORATE BLOCK OF 4, excellent quality, rare! (Image)

Sc.1514, 2006 Rocks and minerals (hubnerite), IMPERFORATE BLOCK OF 4, very fine quality, rare! (Image)

Yvert 83 + 84 + 88, 1894 President Morales Bermudez, all with INVERTED OVERPRINT, mint without gum, VF (Image)