(!!) (SINGLE) 6SN7GTB Westinghouse Rad-Tel Tube Co. gray plates "O" getter halo NOS 1964 (8.4/7.4ma)

1 Low Noise tube) 6SN7GTB Westinghouse Rad-Tel Tube Co. gray plates "O" getter halo NOS 1964 in white box

1 section) 8.4ma Gm=2600

1 section) 7.4ma Gm=2500

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