6L6G
These Are Large ST (Coke Bottle) Shaped Tubes. They have the same ratings as the 6L6GA/GB; 360 volts/19 watts plate and 270 volts/2.5 watts screen.
Производились RCA и другими американскими компаниями.
Характеристики ламп 6L6G производства Sylvania:
http://www.mif.pg.gda.pl/homepages/f...137/6/6L6G.pdf