Lot 2251 o
U.S. Proprietary Medicine Co., 6¢ black, old paper, well centered amid wide margins, thins, creases and a few nibbed perfs, Very Fine appearance, a very rare mint example of the U.S. Proprietary Medicine Co. 6¢ Black on Old Paper, only twenty examples recorded in the Aldrich census.Scott No. RS244a $2,500.
Realized: $2,000