(!!!!) (Best Value Pair) GL-6072 GE and GE LEAR LEAR 5 star triple mica black plates "D" getter halo 1953-1954 used/tests like new faded printing (2.6/2.5ma and 2.6/2.5ma) (Same Gm) (V1 guitar amp, mics, Audio Note) 1-2% matched
1 low noise tube) GL-6072 GE also branded LEAR "5 star triple mica" black plates "D" getter halo 1953-1954 used/tests like new - faded GE printing - close Gm
1 tube) 2.6/2.5ma Gm=1700/1700 GL-6072 GE LEAR
1 tube) 2.6/2.5ma Gm=1700/1600 GL-6072 GE
Tested on Amplitrex
Vplate=250V
Vgrid=-4V
Good Ma range = 2 - 3ma
Good Gm range = 1500-1700
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 (Best Value Pair) GL-6072 GE and GE LEAR LEAR 5 star triple mica black plates "D" getter halo 1953-1954 used/tests like new faded printing (2.6/2.5ma and 2.6/2.5ma) (Same Gm) (V1 guitar amp, mics, Audio Note) 1-2% matched&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/6_c207b0f5-379b-4cd7-803b-50028558fd06.jpg?v=1790963500){kind=link}
 (Best Value Pair) GL-6072 GE and GE LEAR LEAR 5 star triple mica black plates "D" getter halo 1953-1954 used/tests like new faded printing (2.6/2.5ma and 2.6/2.5ma) (Same Gm) (V1 guitar amp, mics, Audio Note) 1-2% matched "Pin It")