7B7 Sylvania NOS 1957 (72/43) (Best Single)
By Tube World
$ 29.99
7B7 Sylvania NOS 1957
72/43
Tested on TV-7
68=100%+
See more: vacuum tube
By Tube World
7B7 Sylvania NOS 1957
72/43
Tested on TV-7
68=100%+