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(!!!!) (Best Value Like New Pair) 6550C Svetlana Russian like new 2011 (143ma and 144ma) (same Gm)
(!!!!) (Best Value Like New Pair) 6550C Svetlana Russian like new 2011 (143ma and 144ma) (same Gm)
By Tube World
$ 129.99
1 pair) 6550C Svetlana Russian like new 2011 good top getters
1 tube) 143ma Gm=11,100
1 tube) 144ma Gm=11,100 taller bottle - on left
Good NOS mA range 130-150mA
Sweet spot is 140mA
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