1881: Quetzal 1 c. black and green, two singles, used on cover, from Guatemala City to Sao Paulo, Brazil, cancelled by segmented cork cancel in black, sent from a stamp dealer "Chauncey Hill" with sender's cachet to top left, on reverse Sao Paulo arrival dated 21 October 1886, some slight climatic discolouration, however a very rare cover to a South American destination and double franking
