BEAUTIFUL WUNDERLICH BLUE VACUUM TUBE (GOOD TEST FOR FILAMENT)

Description

REALLY NICE WUNDERLICH AUTOMOTIVE VACUUM TUBE. GREAT PHYSICAL CONDITION, NO ISSUES.
GOOD FILAMENT CONTINUITY ON PIN #'s 1 & 6. I HAVE NO MEANS TO CHECK EMISSION, THEREFORE I'M SELLING IT AS IS, UNTESTED EXCEPT AS NOTED.
IT SEEMS THE "AUTOMOTIVE" TYPES HAVE A 6.3 VOLT FILAMENT(?), WHICH GLOWS NICELY WHEN I HOOK IT UP TO A 5 TO 6 VOLT DC SOURCE.
SHIPPING TO THE UNITED STATES ONLY.