Quote Originally Posted by HyderConsulting View Post
This is a ceramic/metal composite tube made by Eimax, model 3CX3000A7. It is referred to as a power tube or transmitter tube used in radio station broadcast I believe. I wonder if anyone know how much silver is in one of these and if they may contain platinum?



http://i1162.photobucket.com/albums/.../Eimaxtube.jpg
Can't actually answer your question but maybe you'll like this answer anyway. If it is any good still the tube can be worth up to 200-300. They are still used by the guys that manufacture CB-ham amplifiers. The Eimac is still made in the US. Here is a good example; eimac 3cx3000 | eBay