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(!!!) (Recommended Pair) 6C8G National Union round black plates 1950 era used/very good (3.4/2.8ma and 3.3/3.4ma) (very close Gm)
(!!!) (Recommended Pair) 6C8G National Union round black plates 1950 era used/very good (3.4/2.8ma and 3.3/3.4ma) (very close Gm)
$ 31.99
1 pair) 6C8G National Union round black plates 1950 era used/very good in white boxes
1 tube) 3.3/3.4ma and Gm=1600/1700 small section of getter flaked off glass - see photo - does not effect performance of the tube
1 tube) 3.4/2.8ma and Gm=1700/1600
Tested in Amplitrex
Vplate = 250V
Vgrid = -4.6V
Good NOS Ma = 3ma
Good NOS Gm 1500-1600
dual-triode
You an buy an adapter socket on EBAY to sub this tube for a 6SL7GT
See more: vacuum tube
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 (Recommended Pair) 6C8G National Union round black plates 1950 era used/very good (3.4/2.8ma and 3.3/3.4ma) (very close Gm) "Pin It")
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