1 NOS CASE 200 TUBE’S SYLVANIA GOLD BRAND 6K4 / SN1778A JHS 5977 AUDIO TRIODE’S

Consumer Electronics:Vintage Electronics:Vintage Audio and Video:Vintage Parts and Accessories:Vintage Tubes and Tube Sockets – 1 NOS CASE 200 TUBE’S SYLVANIA GOLD BRAND 6K4 / SN1778A JHS 5977 AUDIO TRIODE’S