RS46a Joseph Burnett & Co 4c Private Die Medicine Stamp Horseback Rider, Boston

Scott RS46a, 4c black proprietary revenue stamp issued for Joseph Burnett & Co. of Boston. Features a dramatic central image of a woman on horseback, flanked by large "4" denomination tablets. Text includes "U. S. INTER. REV. FOUR CENTS" above and "JOSEPH BURNETT & CO. PROPRIETARY" below.