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(!) 203A Sylvania brass base tests like new 1930's

(!) 203A Sylvania brass base tests like new 1930's

$ 299.99

203A Sylvania brass base tests like new 1930's large getter very good condition reboxed

NOT A PAIR

 

203A = 211 with Higher Mu

203A Mu=25

211 Mu = 12.5

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