GJ.HB 1, 8a EX.FI.B.A. Philatelic Expo, with datestamp of the exhibition, VF quality (Image)

GJ.HB 1, "EX.FI.B.A." Philatelic expo of Buenos Airse, with first day postmark (Image)

GJ.HB 1a, EX.FI.B.A. 8th Buenos Aires philatelic exhibition, with variety: Accent over the first "A" of FILATELICA, with special postmark of the expo, VF (Image)

GJ.HB 5, UPU congress, C.Y.T.R.A., pair of sheets (D), unused, without gum, VF (Image)

GJ.HB 6, UPU Congress, C.Y.T.R.A., block of sheets (E), unused, without gum, VF (Image)

GJ.HB 7, UPU Congress, C.Y.T.R.A., block of sheets (F), unused, without gum, VF (Image)

GJ.HB 7, UPU Congress, block of 4 sheets (F), with special postmark of the exposition, VF (Image)

GJ.HB 8, Córdoba Philatelic expo, with special postmark of the expo, VF (Image)

GJ.HB 9, National Anthem, Catamarca & La Rioja, surcharge $1, VF quality (Image)

GJ.HB 9, National anthem, Catamarca & La Rioja, 1P., with first day postmark, VF (Image)

GJ.HB 10, National anthem, Catamarca and La Rioja, 50P., on FDC cover, VF (Image)

GJ.HB 11/12, Postal service in the River Plata 200 years, cmpl. set of 2 s.sheets, VF (Image)

GJ.HB 14, E.F.I.R.A expo, VF (Image)

GJ.HB 14, E.F.I.R.A. Intl. philatelic exhibition, with first day postmark, VF (Image)

GJ.HB 17/8, May Revolution 150 years, set of 2 souvenir sheetS, VF (Image)

GJ.HB 20, 2nd Philalitec meetings of Rio de la Plata, 2 s.sheets, one with 10c. and 15c. values shifted to the left and the other one with those values shifted to the right, VF (Image)

GJ.HB 20, 2nd River Plate philatelic meetings, with first day postmark, VF (Image)

GJ.HB 21, Argentina 66 expo, VF (Image)

GJ.HB 22, Declaration of Independence 150 years, VF (Image)

GJ.HB 24, Battles of Junín and Ayacucho, variety: Shifted impression of the colors, VF quality (Image)

GJ.HB 25, Argentina 77 stamp exhibition, VF (Image)

GJ.HB 34/7, Buenos Aires 80 intl. stamp exhibition, Ships, cmpl. set of 4 s.sheets, VF (Image)

GJ.HB 38/41, PRENFIL 80, set of 4 s.sheets on FDC covers, VF (Image)

GJ.HB 43/4, Antarctic Fauna, set of 2 souvenir sheets on pages with first day postmarks, VF quality (Image)

GJ.HB 46, Battle of Bailén, VF (Image)