Pair, Western Electric Type 257A Radio/Audio Output Tubes, Good
They test strong on my military TV-7D/U tester. The minimum for a good tube is 14, and these test nearly matched at 18 and 19. They are identical, with a date code of 813.
They test strong on my military TV-7D/U tester. The minimum for a good tube is 14, and these test nearly matched at 18 and 19. They are identical, with a date code of 813.
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