Chile c. 1855/60s 5c Colon rose-red Folded Cover w/RENGO Straight-Line Postmark

Folded cover, without contents, franked at lower left with 5c rose-red Columbus, First Santiago Printing "Estancos", three margins, lightly tied at right by circular barred cancel, paying the domestic rate to Talca, stuck with RENGO straight-line (MPF34), no backstamps, a scarce example of this pre-philatelic marking with few examples recorded on mail from this period.