Lot
1474 
Balloon, blue-black hot air balloon handstamp struck at top left of local Philadelphia cover to Professor Lowe bearing Blood & Co., 1854 (1¢) bronze on lilac (15L14), acid tied, "Blood's Penny Post Philada. May 24 8A.M." double-circle datestamp, Very Fine, a very early balloon-related cover sent to Professor Thaddeus Lowe. Estimate $750 - 1,000.
THE ONLY RECORDED BLOOD & CO. LOCAL USE WITH A BALLOON HANDSTAMP.
References: Illustrated in Catalog of Classic American Airposts and Aeronautica 1784-1900 by Schoendorf on p. 33.
Realized: $900