This is a vintage GE 6AU5 6AU5GT Vacuum Tube that comes in New In Box (NIB) and New Old Stock (NOS) condition. The tube has been tested and is in perfect working condition. This unit type tube is suitable for vintage electronics and vintage audio & video equipment. The brand is GE and the model is 6AU5GT. The product is made in the United Kingdom and is ideal for collectors and enthusiasts of vintage parts and accessories.