US POST WWI ERA (1920/30’S) “ARMY AIR CORPS” NICKEL PLATED 2 1/2″ X 4″ X 1″ OILER?, HAS EMPRESSED ON TOP “AIR CORPS / US ARMY”, FINE

US WWII 40MM PRACTICE SHELL, COMPLETE ROUND, 21″ O.A., SCARCER EXAMPLE WITH A 1 1/2″ LEATHER FIRING PIN AREA, SHELL AS USED FOR MULTIPLE DRY FIRING DURING TRAINING, HAS “40MM L/70” & “RNO841008 – 002” HEAD STAMP ON THE BRASS SHELL CASING, THE PROJECTILE IS A CLEAR LUCITE, HM’ED “7” WITH A LEAD? CENTER SECTION