Postal Card, 1891, 1¢ black on buff, Kohler Columbian Exposition Postal Cards, Set No. 7 cards used Abroad, 6 different cards from set (EX63, 66, 67, 68, 71 and 73), 1 without additional stamp to Switzerland (probably didn't go overseas), 2 with 1¢ blue 1890 and 3 with 1¢ blue Colombian, F.-V.F. Scott No. UX10  Estimate $150 - 200. $0 (Image)