Cover with printed advertising of "Guanaco plows, straps, Baxter steam engines ", franked with 5c. Liberty and sent from Buenos Aires to San Juan on 15/JUN/1900, excellent! (Image)

5c. Liberty Head stationery envelope + 5x 5c. Seated Liberty (total postage 30c.), sent by express mail from Buenos Aires to San Juan on 25/OC/1900, arrival backstamp of 27/OC, excellent quality! (Image)

Cover with advertising printed on front and back of "Wood mowers, rakes, etc.", franked with 5c. Liberty and sent from Buenos Aires to San Juan on 28/NO/1900, excellent! (Image)

Cover with printed advertising of "Oliver plow", franked with 5c. Liberty and sent from Buenos Aires to San Juan on 8/AP/1901, excellent! (Image)

RARE CANCEL: Wrapper sent from Buenos Aires to Santa Lucia and forwarded to San Juan, with double circle mark of "SANTA LUCÍA (SAN JUAN)" perfectly applied, VF quality! (Image)

Wrapper sent from Rosario to San Juan on 6/JUL/1905, INCLUDING the original content: "Revista semanal de la Casa de Comisiones y Consignaciones de Santiago Pusso", with PRICES of various products that were sold at the time (this list has a torn piece, that can be seen inside the wrapper, it got glued and the original person who received the wrapper removed the leaflet unsuspectingly, all the same a very interesting source of information!) (Image)

Cover with advertising printed on back of "Factory of Religious Statues, candles, bells", franked with 2c. and sent to San Juan in SE/1905, excellent! (Image)

Cover with advertising printed on back of "Factory of furniture, bed", sent to San Juan in OC/1905 franked with 2c. Liberty, fantastic! (Image)

Cover with corner card of "Jean Rondoni, Lies, Tartres, Cristaux, Cremes, etc.", franked with 2c. (pair 1c. Liberty) and sent from MENDOZA to San Juan on 11/JA/1906, excellent! (Image)

Cover franked with 5c. Liberty with double circle cancel of BERNAL, sent to San Juan on 5/FE/1906, excellent quality! (Image)

Cover with commercial corner card of "Enrique Cerri", franked with 2c. Liberty and sent to San Juan on 25/SE/1906, excellent! (Image)

Cover containing a list of "Current prices of national products" sent from Rosario to San Juan on 29/OC/1906 franked with 2c. Liberty, excellent quality, very interesting! (Image)

RARE USE OF WRAPPER: Wrapper of 2c. "San Martin in medalion" uprated with Seated Liberty stamps of 2c., 5c. and 20c., (total postage 29c.), sent by EXPRESS mail from Buenos Aires to San Juan on 21/JUN/1909 (arrival backstamp of 24/JUN), excellent quality, very rare rate and very scarce express use of a wrapper!! (Image)

Cover with printed advertising for "Howard double plows", franked with 5c. Centenary and sent from Buenos Aires to San Juan on 12/MAY/1910, excellent! (Image)

Cover with beautiful advertising for "Sawmill and wood warehouse", sent from Buenos Aires to San Juan on 3/AU/1910 franked with 5c., excellent! (Image)

RARE POSTAGE: Cover sent by EXPRESS mail (with interesting lilac mark indicating the service) on 30/NO/1914 from Buenos Aires to San Juan, franked with 50c. (Plowman 50c. with straight rays watermark, GJ.336 ALONE), excellent quality, very rare. Arrival backstamp of 2/DE. (Image)

Corner with corner card of "Mercería Alemana, Buenos Aires", sent to San Juan on 11/FE/1915 franked with 2c. (GJ.321), excellent quality! (Image)

Cover with printed advertising for "Avery maize seeder", franked with 5c. Plowman and sent from Buenos Aires to San Juan on 27/OC/1915, excellent! (Image)

Cover sent from Mendoza to San Juan on 28/MAR/1916 franked with 20c. (GJ.367 strip of 4), excellent quality! (Image)

Commercial cover of Vaugheret & Wienert co., importers of DRUGS and PERFUMES, franked with 5c. (GJ.403) and sent to San Juan in 1916, excellent! (Image)

Cover with corner card "Land registry of Pergamino", franked with 2c. (GJ.398), used in Pergamino on 2/AU/1916, excellent! (Image)

Registered cover sent from Buenos Aires to San Juan on 4/OC/1916 franked with 17c., excellent! (Image)

CANCELS OF MENDOZA: Cover sent to Luján de Cuyo on 23/NO/1916, with the very rare cancel "ESTACION MENDOZA - MENDOZA" in blue, as the addressee could not be located the cover was forwarded to Luján (San Luis) and from there returned to sender. On back it bears several interesting postal marks, some very rare, including one railway cancel. With opening defects, but interesting piece for the specialist! (Image)

Cover with advertising for cigars "Royal Tokos, Egipcianos de luxe" and "Adriatic, Habanillos de luxe", franked with 5c. (GJ.403) and posted to San Juan on 1/DE/1916, excellent quality! (Image)

Cover with corner card of LA VASCONGADA (flours and flour products) illustrated with image of child with food can, franked with 5c. (GJ.403) and sent to San Juan on 3/JA/1917, excellent quality! (Image)