These are genuine 6L6GC EI Yugoslavia (pre war production) triple mica construction with three holes in gray plates and guiding pin in USA backelite base.
EI Philips EL34 and 6L6GC codes. Here is visible difference between KT90 in fat PL519 bottle and 6L6GC and EL34 / 6CA7 in PL36 glass envelope.
Click to see all 6L6 6L6G 6L6GC in stock
Do you have a price list for these tubes? How do I purchase?
Hello,
Thanks for your interest in 6L6 tube family, here are tube prices
You can order by sending email to nostubes gmail.com
Kind regards!