Sylvania -- one pair of 7591A tubes test strong -- vintage One is older Sylvania with full dark base and pink writing One is Philips / Sylvania with faded light blue printing on the glass 4500 is "good" and Older tube tests 5000. Newer coin base tube tests 6000 Likely used to some extent If you purchase, you will get the 2 tubes shown in the photos Made in USA US and Canada buyers ONLY. Free shipping, via US Post Office Priority Mail. Will be packed *carefully* prior to free shipping! Check out my other tube listings... I have many old and unusual tubes
You are bidding for 1 tube Lowrey 7591 fat base copper plates NOS Excellent Testing Values. The tube was carefully tested on my TV-7D/U at 68/36 min good (55-56=100%). It sounds wonderful on my hifi system with other new tubes. Super rare and hard to find now. What you see is what you get. Please look at the photos carefully before bidding. I am willing to answer any question Return is accepted if you pay for the returning 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 $68.75. (For order over $1000, Express shipping service is a must. Please wait for the invoice to pay). Please let me know so that I can send you an invoice. If the item(s) purchased may not arrive or faulty, please don't hesitate to contact me before opening cases on ebay. I am willing to reach to a solution and make you completely satisfied. Thanks a million.
NOS NIB 7591A SYLVANIA. Tested Advance Digital Tube Tester Amplitrex AT1000. Like Amplitrex AT1000 Advance Digital Tube Tester. "O" Getter. Grey Plate. Hickok 752a tube tester, AVO Type 160. We specialized in thoroughly tested and screened quality.
The tube was carefully tested on my TV-7D/U as shown in the photos with 36 min good (55-56=100%). It sounded wonderful on my hifi system with other 3 new tubes. Super rare and hard to find now.