GE 8438 / 4-400A Power Tetrode. RF Amplifier FM Transmitter Electron Tube.Note: Box was sealed as shown in photo #2 (which I opened to take photos and show you the tube). See photo's of nice NEW clean tube! Check out the photo's! Photos for condition and quality. My Other Items For Sale. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "tubescoins" and is located in this country: US. This item can be shipped worldwide.