You are bidding for 1 pair EL34/6CA7 Metal Base Valvo Disc getter, Excellent Testing Values matched pair, working perfectly. This is the first version 1953 with special base (see photos). These tubes are carefully tested on my TV-7D/U at 54-56/30 min good (65%). NOS (100%) range on TV-7D/U is 45-46. They sound wonderful in my auto bias SE amplifier for 2 hours and a half. I don't guarantee them in your system. One tube has a broken guiding pin but was fixed properly. Please ask me any question before bidding. These tubes are super rare and hard to find now. What you see is what you get. Return is accepted if you pay the return shipping fees. Thanks

P/S: The shipping fees in the listing is by regular mail (normally Vietnam post) taking from 12-25 days depending on buyers' local customs. To some regions, it can take even longer than that. Besides, Vietnam post is not always available to some countries in South America, Northern Europe or Africa. Please ask me before paying. If you want to use express shipping services like DHL, Fedex or UPS express taking 3-7 working days, you have to pay an extra of around $60. Please let me know so that I can send you an invoice. If the item(s) purchased may not arrive or be faulty, please don't hesitate to contact me before opening cases on Ebay. I am more than willing to reach to a solution and make you completely satisfied. Thanks a million