This Sylvania 6BF11 NOS tube is a vintage audio and video component that is perfect for collectors and enthusiasts. Made in Japan, this one unit quantity tube is a rare find that is sure to enhance the audio quality of any vintage electronics setup. With the Sylvania brand, you can trust in the quality and durability of this tube. Don't miss out on the opportunity to own a piece of audio history with this NOS tube from Sylvania.