JAPANESE WWII TYPE 89 KNEE MORTAR ROUND, BEAUTIFUL CONDITION WITH 98% BLACK GLOSS FINISH AND STENCILING, DATED 17.9 (SEPT / 1942)

US VIETNAM WAR ERA ORDNANCE MFGER’S 12″ X 10″ X 3″ PROFESSIONALY FRAMED AND LABELED SHADOW BOX CONTAINING EXAMPLE OF 2 CUT AWAY’S OF THEIR PROTYPE 40mm EXPLODING PROJECTILES, DESIGNATED “E1” & “E2” DESIGNS, PROJECTILES ARE LABELED “CARTRIDGE, 40mm M.P. XM576” & “ARRADCOM” (MFGER?) & “ALL COMPONENTS INERT”, MINT CONDITION