6c5g tube Fivre Italy preamp tubes pair valve silver smooth round plate 

very rare edition of 6C5G Fivre made in Italy 

silver foil getter bottom 

brown base 

yellow label old production 1940's 

ww2 wartime 

2 tubes 6c5g Fivre made in Italy 

tested with tube tester TV7 = 110 & 98 (reference good at 50) 

super strong

matched pair

reference 100% = 80 

both tubes exceeding 100% emission test results 

extra strong & full life 

very hard to find in silver smooth plate 

box 200