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(!!!) (Best Single 1950's) 5687 Tungsol black plates

(!!!) (Best Single 1950's) 5687 Tungsol black plates "U" getter used/tests like new 1950's (36/39ma)

$ 69.99

1 low noise tube) 5687 Tungsol black plates "U" getter used/tests like new 1950's faded printing

1 section) 36ma Gm=11,400

1 section) 39ma Gm=11,750

  

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