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2 X EF11 TUBE. NEW OLD STOCK.
BRAND: PHILIPS-MINIWATT. 1940s MAZDA PRODUCTION.
MATCHED PAIR.
TESTED IN FUNKE W20 TUBE TESTER:
MINIMUM GOOD EMISSION = 60% = 6.5mA
11.5mA EMISSION (EM)
11mA EMISSION (EM)
CB406U1