Liberia, 1936, 6¢ on 3¢ Bister Brown, tied by "Monrovia, Liberia, 28. II. 36" cds's on flown First Liberian Air Mail Service corner card cover to Cape Palmas, with "Harper, Liberia, 28. II. 36" receiving cds on front and reverse; cover slightly reduced at left, Very Fine. Scott No. C2  Estimate $100 - 100. $0 (Image)