Auction # 2027 ARGENTINA: Special July auction

INTERESTING RIVER P.O. CANCEL: Cover franked with 8c. (GJ.49) and sent from Buenos Aires to Córdoba on 11/SE/1879. It was cancelled with a rectangular datestamp BUENOS AIRES - ESTACIÓN CENTRAL, carried to Rosario via river mail: backstamped "ESTAFETA AMBULANTE FLUVIAL - B.A. - R. - P. - S.F. Nª1 - 11/SET/79", Rosario transit mark of 12/SE, and Córdoba arrival on the following day, VF quality, rare!