Lot
391 
Hercules Powder Co. Multicolor design on 1918 cover showing Black Beasted Plovers with Imprint, "E.C. Smokeless Shotgun Powder" franked with 1¢ +2¢ Washington-Franklins tied by Brookville, Pa. machine cancel, Trademark Herculean Figure with Club on back flap, Extremely Fine and choice, a very rare design, ex-Beals. Estimate $400 - 600.
Realized: $900