One NOS GEC U52/5U4G black plate black base cup getter made in England, carefully tested on TV-7D/U and AVO CT160 with no short and no gas, matched and balanced. The testing values are ranging from 52-60/40 min good. All the tubes are tightly balanced. Price is for one tube. Thanks

P/S: It is important to bear in mind that the shipping service I offer in the listing is $28.65 to all regions to which Vietnam post is available. Due to the bad epidemic, Vietnam post is not always available to some locations especially in Africa, some South American countries or even some Northern European nations. Also, it takes longer than usual (22-60 days depending on the distance and your local customs). So, please wait patiently email/message me if there is any problem occurred before opening disputes on ebay. It will make the situation more complicated and obviously affect my selling performance.  For that reason, please ask me before bidding. Besides, if you need the tubes urgently, you have to pay an extra of $45.75 (taking 10-12 days) or $68.75 (taking 3-5 days) by DHL to all regions world-wide. Thanks a million