1866, 3c rose, four good to large margins, tied to folded letter, datelined “St. Thomas, 16 November, 1866”, to Christiansted, St. Croix, horizontal filing fold well clear of adhesive, fine and scarce, believed to be the earliest recorded example on cover, pre-dating the 21 November, 1866 recorded by Engstrom; with 1978 Copenhagen Philatelic Society certificate.
