Lot 61773 – 1868-72 5c blue, 10c green and 20c rose, unique three-colour franking on cover

1868-72 5c blue, 10c green and 20c rose, margins varying from complete to large , tied by « 3 » barred oval of Montevideo on folded cover to Buenos Aires carried by « La Oriental », displaying a seven-times the single rate, being a high franking as usually encountered in the Benítez correspondence with several famous covers in the « Sun » Issues; the only imperforate « Large Numerals » Issue cover recorded exhibiting a three colour franking (four-colour frankings do not exist); a recently discovered item which is offered in this sale for the first time at auction; cert. Hernández Rocha (2021).