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6H6 Double Diode. A vintage vacuum radio tube by GE General Electric, U.S.A. #20488 | Boutique en ligne plentyShop LTS
Russian 6H6, 6H6N vacuum tube, Audio, Other Audio Equipment on Carousell
Convert Your 6H6 Tube to Solid-State - Ron's Radios
Convert Your 6H6 Tube to Solid-State - Ron's Radios
Philco 6H6 Vacuum Tube New Old Stock Metal Vacuum Tube - Etsy UK
RCA 6H6 Vacuum Tube New Old Stock Excellent Condition - Etsy
File:Vintage EICO Tube Tester, Model 625, Metal Cabinet, EICO Electronic Instrument Company, One Vacuum Tube (6H6), Made In USA, Circa 1950 - 1952 (32892390481).jpg - Wikimedia Commons
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
One Hickok Tested NOS 6H6 Vacuum Tube - Various Brands Available | eBay