(1 set of 10 tubes) 448A Western Electric "TIPPED TOP" used/test like new 85-95% with "D" getter 1960's
$499.99
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1 set of 10 tubes) 448A WE "TIPPED TOP" used/test like new 85-95% with "D" getter 1960's 10 tubes for $499.99 Tested on Amplitrex 1) 27.4ma Gm=27,200 (6552) 1) 28.2ma Gm=25,200 (6552) 1) 25.0ma Gm=25,800 (6539) 1) 29.4ma Gm=27,100 (6526) 1) 27.0ma Gm=26,600 (6552) 1) 25.8ma Gm=25,300 (6552) 1) 30.0ma Gm=27,100 (6526) 1) 31.4ma Gm=27,700 (6552) 1) 27.0ma Gm=27,300 (6552) 1) 25.0ma Gm=26,000 (6552)
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