(1 set of 10 tubes) 448A Western Electric "TIPPED TOP" used/good 75-85% with "D" getter 1965-1966
$479.99
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1 set of 10 tubes) 448A WE "TIPPED TOP" used/test like new 85-95% with "D" getter 1965-1966 10 tubes for $479.99 Tested on Amplitrex 1) 24.5ma Gm=24,500 (6552) 1) 22.8ma Gm=22,700 (6613) 1) 23.4ma Gm=25,400 (6552) 1) 22.3ma Gm=25,100 (6552) 1) 24.6ma Gm=25,600 (6539) 1) 24.0ma Gm=25,200 (6552) 1) 24.2ma Gm=25,000 (6539) 1) 23.6ma Gm=25,800 (6552) 1) 24.6ma Gm=27,300 (6526) 1) 22.9ma Gm=23,700 (6613)
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