I looked at a box of tubes I have had a long time. Some are exotic and maybe rare I’m sure. Contact me if interested. A few are: RCA 8166 or 4-1000A (2 ea.) RCA 815 RCA CRC-866A / 866 VT-46-A GE GL-4021-125A (2 ea.) GE 5561 / FG/104 GE 211 VT-4-C Eimac 4-65A Raytheon JAN-CRP-4B31 WesternElectric 705A And many more. Skip Magnuson W7WGM Spokane, WA