"King" Air Rifles. Multicolored Illustrated design on 1906 cover showing Boy with King Air Rifle, franked with 1903 2¢ red (margin faults) tied by Atchison, Kans machine postmark, additional multicolored ad on reverse showing crossed rifles; cover with ink erosion spot and slightly reduced at right, Fine. Estimate  $150 - 200. $0 (Image)