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(!) (Single) 6550 Tungsol black plate used/good 1950's - guide pin broken off (123ma)
(!) (Single) 6550 Tungsol black plate used/good 1950's - guide pin broken off (123ma)
$ 199.99
6550 Tungsol black plate used/good 1950's (2 side getters and 1 top getter)
guide pin on base is broke off - see photo
123ma
Gm=9600
Tested on Amplitrex AT1000
Good used mA range = 110-130mA
Good used Gm=9,000-10,000
See more: vacuum tube
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 (Single) 6550 Tungsol black plate used/good 1950's - guide pin broken off (123ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_a235cc9e-7f70-4f36-97fe-2f5c1b4e7358.jpg?v=1762555819){kind=link}
 (Single) 6550 Tungsol black plate used/good 1950's - guide pin broken off (123ma) "Pin It")