Sylvania 12AU7 ECC83 Early Production Black Plate Copper Support Rods Vacuum Tube For Your Bottlehead Berman Plays Liszt This Sylvania 12V66GT chrome dome

This Sylvania 12V66GT chrome dome / silver top power tube was tested on our Paul Hart-calibrated TV7 for shorts

This new old stock-testing RCA 12BH7A was tested on our Maxi Preamp II for shorts

This lot of eight new old stock

crenelated top and bottom mica spacers

IN WELL OVER 2000 TRANSACTIONS

Sylvania 12AU7 ECC83 Early Production Black Plate Copper Support Rods Vacuum Tube For Your Bottlehead Berman Plays Liszt This Sylvania 12V66GT chrome domeThis Sylvania 12AU7 ECC82 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured a nicely balanced 68 72 where minimum (65%) is 56 56 and 100% is 86 86. This tube has black, slightly shiny ladder plates; excellent flashing; a top, slanted D getter; copper support rods. This is an early production 12AU7. It is not a 12AU7A WE HAVE SCORES OF THOUSANDS OF