12/27/12 RE: Tubes for display? Hi: I have a few mid size transmitter tubes that have an open filament or lost vacuum. These tubes still look cool: Eimac 450TH, Eimac 304TL, 845W, 803. Do you have a tube display at your Radio Musuem where these can be used? No rush - let me know and i'll deliver them. Regards, ed KC2QBK