(Hercules Powder) "Infallible" or "Ballistite" (Powders). Exceptional multicolor design on 1913 cover showing Trap Shooting Competion, franked with 1¢ Washington-Franklin pair tied on reverse by Claremore, Okla. duplex cancel, slightly reduced at left affecting couple perf on one stamp, Very Fine, ex-Beals. Estimate  $150 - 200. $0 (Image)