(!) 12BH7A GE gray oval plates “”O”” getter halo used/good 1964 (7.2ma/8.5ma) Title: 12BH7A GE used 1964

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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