(!!!!) (GOOD VALUE PAIR) 408A Western Electric NOS 1972 and 1976 (78/60 and 80/60)

1 pair) 408A Western Electric NOS 1972 and 1976

1 tube) 78/60 (7639=1976)

1 tube) 80/60 (7226=1972)

Matched on B&K tester

Above 85 is strong

– Little Dot I+

20 volt filament