Original U.S. WWII Tin Can Salvage Depot Poster by The War Production Board U.S. Civil War that was used for fighters

that was used for fighters and land-based bombers

but more likely this is from Morocco in North Africa

however the binoculars were painted O

and still held significant power

Along the top of the barrel is engraved/stamped:

Original U.S. WWII Tin Can Salvage Depot Poster by The War Production Board U.S. Civil War that was used for fightersOriginal Item; Only One Available. Even before America's entry into World War II, and stretching over four years, a parade of scrap drives kept citizens busy. The drives started by collecting aluminum before moving to products such as tires, paper, tin, household fats, silk stockings and even coats for Russian refugees. Through it all, Americans combined a strong community spirit with fierce competition to salvage tons of products vital to the war