Lot
695 
DuPont High Explosives. Multicolor design on 1909 postcard showing Hot Air Dirigible, franked with 1¢ Washington-Franklin with DuPont perfin tied by indistinct machine cancel, Very Fine. Estimate $50 - 75.
Realized: $180
Sale 20: The Westpex Sale
U.S. Postal History: Gun Covers: Powder Manufacturers
Lot 695
DuPont High Explosives. Multicolor design on 1909 postcard showing Hot Air Dirigible, franked with 1¢ Washington-Franklin with DuPont perfin tied by indistinct machine cancel, Very Fine.Estimate $50 - 75.