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(!) (#1 203A RCA Pair) 203A RCA Radiotron NOS 1940's excellent condition same date codes (203A=211 with higher Mu)

$ 428.88

1 matched pair) 203A RCA Radiotron NOS 1940's large getters - in old world boxes

tubes are in excellent condition and test strong - same date codes (SI)

 

203A = 211 with Higher Mu

203A Mu=25

211 Mu = 12.5

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