1878, 3¢ Gray Blue & Rose Carmine, printing III, large margins, tied by "St. Thomas 30/3 1880" cds with matching strike adjacent on cover to Christiansted (Bassin), St. Croix, reverse with unusual "Christiansted, 1/4, 1880" cds with serif letters and the first "8" inverted (Engstrom type 17), one worm hole, a Very Fine use. Facit No. 6c SKr 4,000 ($510). Scott No. 6  Estimate $300 - 400. $0 (Image)