Front of a printed circular sent from Rosario to B.Aires franked with 1c. (GJ.35A ALONE), along framed "P.D.", very fine quality, rare rate of printed matter! (Image)

Cover franked with GJ.36 + 54, with rectangular datestamp BUENOS AIRES - CENTRO OESTE - 13/DE/1882, sent to Paris, with several transit and arrival marks, VF! (Image)

GJ.37, 5c. Rivadavia with groundwork of HORIZONTAL lines, franking a folded cover sent from Rosario to B.Aires on 20/FE/1868 (Image)

Cover to San Pedro, franked by GJ.37 (groundwork of horizontal lines), with mute barred cancel and datestamp of BUENOS AIRES 7/NO/68, VF quality! (Image)

Folded cover to B.Aires franked with GJ.37 (pair + single) with framed straightline CORDOBA cancel, and Rosario transit backstamp of 21/OC/1867, excellent and rare. With certificate of authenticity. (Image)

Fragment of a cover front sent to San Joaquín (via Mercedes, Corrientes), franked with GJ.38 (5c. Rivadavia) with spectacular mute "circle of 8 wedges" cancel of CONCORDIA, very fine quality, rare! (Image)

GJ.38, L-shaped block of 3 (total 15c.) franking a folded cover sent from Rosario to B.Aires on 29/JUN/1869, very attractive! (Image)

Folded cover franked GJ.38, with BUENOS AIRES 18/MAR/1870 cancel, sent to Esquina. It bears 2 strikes of CORRIENTES transit datestamps with Maltese cross for 31/MAR and 3/APR/1870, VF quality and interesting! (Image)

GJ.38, 5c. Rivadavia, groundwork of crossed lines, splendid stamp of jumbo size (the perforation is shifted, stealing part of neighboring stamp), franking a cover from Rosario to Salta 4/FE/1875, very fine quality! (Image)

GJ.38, on folded cover with datestamp of DOLORES 24/DE/1874, excellent quality! (Image)

Cover franked with GJ.53 (and it had another stamp to complete the franking, which is missing), sent to B.Aires, on reverse with rare "RIO 2º - CORDOVA - 4/MAY/89" and Buenos Aires datestamps of 5 and 6/MAY (one with inverted year), rare! (Image)

Printed matter franked by GJ.133 ALONE (¼c.) posted in Buenos Aires on 10/JUN/1890, with some minor defects but extremely rare (this stamp is very scarce used alone, paying the basic rate for local printed matter that was valid for a very short time!) (Image)

GJ.133/4, 1890 Provisionals of ¼c., 4 stamps of each overprint (total 2c.) franking a cover used in Buenos Aires on 15/AU/1890, VF quality! (Image)

GJ.176, 1896 2c. Rivadavia franking ALONE a cover used in B.Aires on 9/OC/1899, attractive rate of printed matter, very fine quality! (Image)

Magazine of Centro Bellavistense posted in Buenos Aires in JA/1918 franked with ½c. (GJ.423) rate for impreso diferido local, scarce! (Image)

Magazine of Centro Bellavistense posted in Buenos Aires on 6/JA/1922 franked with ½c. (GJ.457) rate for impreso diferido local, scarce! (Image)

GJ.529, 1921 3c. First Panamerican Postal Congress, franking ALONE an unsealed cover (printed matter) used locally in Buenos Aires, VF quality! (Image)

Magazine of Centro Bellavistense posted in Buenos Aires on 24/AP/1923 franked with ½c. (GJ.457) rate for impreso diferido local, scarce! (Image)

GJ.1057, 50P. San Martín franking ALONE a registered cover sent from B.Aires to Bahia Blanca, very rare! (Image)

GJ.1524CZ, 16. Belgrano WITH LABEL AT LEFT + other values (total 50c.), franking a registered cover used in Ramos Mejía on 8/OC/1970, labels like this one are very rare used on cover, VF quality! (Image)