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These are the lengendary Amperex/Philips Holland made (have VRx/4xx etched codes) 7308/E188CC rugged premium version gold pins tubes that are considered by many as best of the best 6DJ8/6922/7308 type tubes. They are basically noise and microphonics free tubes if you use them properly.
All tubes were tested on my calibrated TV-7D/U tube tester on shorts and grid leakage. Min.good for 7308/E188CC type tubes begins at 50=65% or 77=100%.
I have one matched pair of Philips Miniwatt 7308/E188CC tubes for sale at $240/pair. These Miniwatt label tubes are the most desirable Amperex/Philips Holland made 7308/E188CC tubes: they both same have "VR7/48K2" etched codes which put them back to later 1958---some of the oldest halo getter 7308/E188CC you can ever get! They scored 78/76 and 83/86---still tested like new.
World wide free shipping included. Paypal please add 3-4% fee.
Fine Prints: I will offer 7 days warranty on the microphonics and noise on the NIB/NOS tubes I sell and will NOT guarantee any used tubes due to the nature of vintage tubes unless described.