Vacuum tube type JRC 6H6 | 102718276 | Computer History Museum
GE 6H6 Vacuum Tube New Old Stock Excellent Condition Original Box Metal Vacuum Tube - Etsy Australia
True NOS NIB GE USA 6H6 Metal Vacuum Tube - VIVA TUBES
6H6 GE JAN NOS Double Diode Tube. Laboratorio Musicale
6H6 General Electric Audio Vacuum Tube Valve - Bangybang
File:Vintage EICO Tube Tester, Model 625, Metal Cabinet, EICO Electronic Instrument Company, One Vacuum Tube (6H6), Made In USA, Circa 1950 - 1952 (36078986142).jpg - Wikimedia Commons