1939 Hoppes Oil Folder,3-3/8" 6-1/4" tri-fold with 6 pages/panels.The front and back covers are shown.When open it pictures the Hoppe's 1oz can with a more flat metal cap than the common tapered cap.Also in the picture is a .22 semi-auto pistol,a fishing reel and double barrel shotgun action.It is dated "1939 Frank A. Hoppe,Inc.". Excellent condition with darkening from age