US AIR FORCE 1980’S ERA “LOAD ADJUSTING” SLIDE RULE FOR THE “R4D – 8” & “R4D – 8Z” AIRCRAFT, MINT CONDITION IN THE LEATHER CASE

US WWII UNTOUCHED M1943 SWIVEL BALE FRONT SEAM HELMET WITH 80/90% ORIGINAL COMBAT FINISH, C/W IT’S ISSUED FIBER LINER, THE KHAKI WEB CHIN STRAPS ARE IN FINE CONDITION AND C/W EARLY BRASS HARDWARE, THE LINER HAS BEEN PAINTED BLACK? AND IS C/W THE EARLY GREEN PHOSPHATE FINISHED SWEATBAND HARDWARE WITH ALL EXC/PLUS KHAKI WEBBING, NO C/S ON LINER , NICE 100% ORIGINAL US WWII HELMET