cover Gun cover, overall illustrated Ordnance, War Relics and Military Goods Dealer ad cover with illustration of breech loading Remington Rifle in black and Hudson River scene in pale green, overall illustrated design of their five-story N.Y.C. store on reverse, franked with 2c Carmine (375), tied by 1911 N.Y. wavy line machine cancel, minor cover edge tear and lacking tiny portion of flap, otherwise very fine