(!!!) (Recommended Single) 127 Arcturus Blue Balloon used/good 1930 era in white box (4.3ma)
$44.99
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1 tube) 127 Arcturus Blue Balloon used/good 1930 era in white box 4.3ma Gm=800 Tested on Amplitrex Vplate=250V Vgriod=-21V NOS Ma = 4-5ma NOS Gm=800-900
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