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(!!!!) (#1 12AU7A Raytheon Pair 1960's) 12AU7A Raytheon Uniline gray ribbed plates "O" getter NOS 1960's (9.2/10.0ma and 8.8/9.0ma) (same Gm for both tubes)

$ 69.99

1 low noise pair) 12AU7A Raytheon Uniline gray ribbed plates "O" getter NOS 1960's 

1 tube) 9.2/10.0ma Gm=2000/2100

1 tube) 8.8/9.0ma Gm=2000/2100

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