US WWII 20MM ROUND, BRASS CASE IS DEWATED & IS HM’ED “S.L. 45” (SALT LAKE / 1945), STEEL PROJECTILE HAS BRASS END CAP??

US WWII AAF “SIGNAL DRIFT, NIGHT, AN MARK 5 MOD 2 / 1945″, 18 3/4″ X 3” ROUND GRAY PAINTED WOOD DRIFT, 90% + FINISH AND DECAL, FINE