You are bidding for ONE matched pair Kenrad 6SN7 6SN7GT 5692 VT-231 Black Glass NOS Tested carefully tested on my TV-7 and sound wonderful in my hifi system. There are some glass and dried glue debris which does not affect the tubes’ performance. They both sound superb. Return is accepted if you pay for the returning fees. Thanks

P/S: It is important to bear in mind that the shipping service I offer in the listing is $25.68 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