(!) 12BH7A GE gray oval plates "O" getter halo used/good 1964 (7.2ma/8.5ma)
By Tube World
$ 24.99
1 low noise tube) 12BH7A GE gray oval plates "O" getter halo used/good 1964 (KT) date code
7.2ma Gm=2400
8.5ma Gm=2500
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 12BH7A GE gray oval plates "O" getter halo used/good 1964 (7.2ma/8.5ma) "Pin It")