GJ.11, 10c. without accent over the U, very good example of 4 margins with CERTIFICADO and double ellipse Rosario cancels, VF quality! (Image)

GJ.35, with double circle cancel ESTAFETA DE YAVI - JUJUY, VF quality, very rare! (Image)

GJ.35, with CERTIFICADO cancel of Mendoza, VF quality, very rare (Image)

GJ.35, with rectangular datestamp TRINCHERA DE SAN JOSÉ - CORRIENTES in blue, excellent quality, very rare! (Image)

GJ.35, pair, with rectangular datestamp E. AMBULANTE SUPL. (B.A.), excellent quality, very rare! (Image)

GJ.35, with rococo cancel of SAN LORENZO in blue, excellent quality, very rare! (Image)

GJ.35, with French numeral "2240" cancel inside dotted diamond, striking! (Image)

GJ.35, with mute "6 strokes" cancel of MENDOZA, very fine quality, rare! (Image)

GJ.35, with spectacular mute "circle of 8 wedges in V" cancel of Concordia, excellent! (Image)

GJ.35A, with datestamp of CALINGASTA - S.J. with Maltese cross, excellent quality, very rare! (Image)

GJ.35A, with rectangular datestamp of RINCONADA - JUJUY, VF quality, very rare! (Image)

GJ.35A, with double circle cancel of VALLE GRANDE - JUJUY without date, VF quality, very rare (reference piece) (Image)

GJ.35A, Balcarce 1c. violet, pair franking a complete newspaper sent from Chivilcoy to Bragado on 8/AU/1878, very fine quality, very rare! (Image)

GJ.36 + 54B, on fragment with extremely rare cancel "ESTAFETA AMBULANTE - 2 - RIOS PARANA Y PARAGUAY", very legible, VF quality! (Image)

GJ.37, 5c. Rivadavia with groundwork of horizontal lines, with semi-mute "H" cancel of HUMAITÁ (during the Argentine occupation of that town in the Paraguayan War), almost complete, excellent quality, very rare! (Image)

GJ.38, with rococo cancel of MEDINA, light thin on back in the hinge area else VF, extremely rare! (Image)

GJ.39, 1867 10c. Belgrano, imperforate PROOF, printed in the issued color on thin paper, with red "PROOF" overprint, very rare! (Image)

GJ.41, 15c. San Martín, groundwork of horizontal lines, mint no gum, well centered, very fine piece, very rare! (Image)

GJ.55, 1877 24c. San Martín, block of 4 mint with original gum, VF quality. According to the 1974 Kneitschel catalogue, the value of a mint block of 4 is equivalent to 8 singles (US$300+) (Image)

GJ.65, 1882 12c. Little Envelope ultramarine, perforation 14, block of 4, mint original gum, excellent quality, rare! (Image)

GJ.71, ½c. on 5c., MNH block of 4, superb, very rare in this fine quality! (Image)

GJ.74, 1c. on 15c., carmine overprint, mint block of 4, VF quality! (Image)

GJ.76, 1884 CUATRO c. on 5c., block of 4, mint with full original gum, the lower stamps are MNH, the top stamps very lightly hinged, excellent quality, rare! (Image)

GJ.80, 1888 ½c. Urquiza, strip of 6, 2 with partial OFFSET IMPRESSION ON BACK, mint no gum, very rare! (Image)

GJ.96/118 (incomplete), 1889 PROOFS and ESSAYS of the Sudamericana issue, 15 different examples printed on card in black or black-chestnut, including some unissued copies and other high values, fine to VF quality, very good lot! (Image)