(!!!) (Recommended Pair) 866A GE NOS 1971 graphite lifted off top plate (56/40 and 57/40) Title: 866A GE

1 matched pair) 866A GE NOS 1971 graphite burned/flaked off top cap when aged in tube tester – this is common when tubes are being used – graphite burns off top plate

1 tube) 56/40

1 tube) 57/40 – some graphite material at bottom of tube