2 Type 6CA4 / EZ81 Vacuum TubesThese used tubes have been tested for emissions. On my Hickok TV-7 tester they read 53/53 and 53/53. A reading of 40 would represent the minimum recommended value. They feature gray plates and halo getters. The 6CA4 (aka EZ81) full wave rectifier was used in many different moderate output audio amplifiers, especially in circuits that used 6BQ5 / EL84 or 7189 power output tubes. Winning bidder agrees to pay in full by Paypal plus shipping and handling within 3 calendar days of the close of the auction. Multiple purchases are encouraged to reduce shipping costs. Shipping & Handling Rates for this auction are: Priority Mail in the USA or Airmail to Canada is $6.50. Airmail to all other countries is $9.85. SORRY – NO SALES TO ITALY I have many thousands of vacuum tubes in stock. Write to me if you need other tubes. Feedback will be posted for the winning bidder when the item ships. I now ship to all destinations three days per week. Thanks for your bids.