This is a vintage 6SL7GT tube made by GE in the United States. It is perfect for audio enthusiasts looking for a high-quality NOS tube. With its classic design and top-notch construction, this tube is sure to bring out the best in your vintage audio equipment. The tube is in great working condition and has been thoroughly tested for optimal performance. This tube is a rare find and a must-have for anyone who wants to experience the most authentic vintage sound.