These vintage brass shell casing i believe may of been for tanks.
Treasure Gurus Bullet Shell Casing Shaped Army Tank for unisex : Home & Kitchen
Cartridge case terminology and identification – Stephen Taylor, WW2 Relic Hunter
Shell Casings Memento Box - Greg Seitz Wood Working
Large Brass Artillery Shell. 120mm 125 1954.
Custom Military Pistol Case - Retirement Handgun Box
Original WWI U.S., British, and German Trench Art Brass Artillery Shel – International Military Antiques
Artillery Shell Casing
Large Old US Army Brass Shell Casings
Are you looking for something to do with the brass shells that were given to your family following a military burial or funeral? Our craftsmen
Three Volley Salute Military Tribute Brass Shell Bullet Casing Engraving Service
What's The Best Way To Clean Brass?
Army Ammunition Plant Is Tied to Mass Shootings Across the U.S. - The New York Times