2 tubes 6L6G Fivre made in Italy clear glass , same code F6G
tested twice
test results with tube tester TV7
tube 1 = 3 (reference good at 46)
tube 2 = 30 (reference good at 46)
Test with Tube tester Funke W19S,
tube 1 = 72mA (reference good at 18mA)
tube 2 = 70mA (reference good at 18mA)
clear glass
grey plate
ceramic spacers insulators
large squared getter double welded bottom
black base
rare power tube for last stage audio
box 180
pair 2