They are branded Siemens and they come in original Siemens boxes + wrapped in paper. All pairs are carefully matched by plate current on calibrated METRIX U61B tester!! I collect tubes and tube gear for more then 35 years and I start to sell recently, please be sure to check my other items and visit my store for more rare NOS tubes and parts. I really do care about your satisfaction and Ill do my best to solve any kind of problem.
I have more than 250000 NOS tubes in stock and just small part is listed here, if you are interested in any specific tube or part, please send me message. The item "Matched pair (2 pcs) Siemens NOS NIB QE05/40 = 6146B tubes Made in W. Germany" is in sale since Friday, May 29, 2015.
This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets".rs" and is located in Belgrade. This item can be shipped worldwide.