(!!!!) (BEST PAIR) 408A Western Electric NOS 1976 and 1984 (91/60 and 91/60)
$47.99
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1 pair) 408A Western Electric NOS 1976 and 1984 1 tube) 91/60 (7639=1976) 1 tube) 91/60 (8439=1984) Matched on B&K tester Above 85 is strong - Little Dot I+ 20 volt filament
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