Lot
600 
(Aeronautical) Williams & Young, The Worlds Greatest Aeronauts, beautiful blue illustrated ad showing Balloon with Parachuter below and "The Most Marvelous and Dareing Feat Ever Performed by Humane Being", on unsealed 1891 cover bearing 1¢ blue (219), s.e. at bottom, tied by "Chicago" third class grid cancel to the Secretary of Fair in Belleville, Canada at the 1¢ printed matter rate, Very Fine and attractive, a rare design. Estimate $250 - 350.
Realized: $120