This Raytheon 6BK4C 6EL4A Audio Electronic Tube is a vintage gem that will surely bring back nostalgic memories. Made in the USA, this audio tube is perfect for collectors and enthusiasts of vintage electronics. With its brand name Raytheon, you can be assured of its quality and durability. This audio tube is a type of vintage part and accessory that is perfect for restoring your old audio equipment. It is a NOS (New Old Stock) and comes in its original packaging, making it a great addition to your collection. Don't miss the chance to own this piece of vintage history. Money back if there is a problem with the tube. Please look at pictures for more details. We will package securely and ship promptly.