Original WWII-era JAN Westinghouse VT-100A / WL-30 transmitting vacuum tube, Made in U.S.A. Features strong military markings including the Westinghouse logo and “1000 HRS.” designation on the brown micanol base. Large 4-pin, top-cap transmitting tube used in military communications and vintage RF equipment. Untested by us but appears complete with intact internal structure, clear glass, and straight pins. Excellent candidate for collectors, restorers, and vintage ham radio enthusiasts. Please review all photos carefully for condition details. Sold as found and as-is. #vacuumtube #Westinghouse #VT100A #WL30 #JAN #WWII #hamradio #militaryradio #tubecollector #vintageradio