Labeled for MECK. 

Tests 2100/2600 where 1950 is min good on Hickok 539C tester.

We specialize in audio tubes. 

All tubes are guaranteed.

Please see our other items for more vintage tubes & audio.

We combine orders for shipping.

No 1st class shipping to China or Russia, email for options.

International Orders over $150 will only ship via Express Mail or Ebay Global shipping with discounted rates.

Thank You.