GJ.35, 1c. Liberty Head franking a letter used in B.Aires on 11/MAR/1907 about an inspection of steamer "María Luisa" that was carried out by Prefectura General de Puertos, VF! (Image)

GJ.507, 3c. San Martín with M.J.I. ovpt, franking ALONE a card used in Buenos Aires on 2/MAY/1938, VF and rare alone on cover, with the correct rate! (Image)

GJ.729, 50c. Puma, 35 examples franking a cover sent from General Rodriguez to Buenos Aires on 20/MAY/1964, spectacular! (Image)

GJ.746, 4P. San Martín, 14 examples + 10P. Incan bridge (GJ.751) franking a registered cover sent from Rafaela to B.Aires on 8/JUN/1967, VF quality! (Image)

Registered cover sent from Campana to Buenos Aires on 6/NO/1967, franked by GJ.765 (50P. San Martín) ALONE, VF quality, rare! (Image)

2 Airmail covers sent to USA with nice rates of 39P. and 50P., VF quality! (Image)

Registered cover used in Buenos Aires on 16/DE/1968 franked with 220P. (44x GJ.748), LARGEST AMOUNT OF THIS STAMP ON COVER, very nice! (Image)