1954 Genalex Z729 Vacuum Tube STRONG? EF86 6267 GEC England Great Britain RARE

  
This listing is for 1 Genalex Z729 (EF86/6267) vacuum tube. It tests 28/18 on my TV-7D calibrated 1/27/24. 28/18 or higher is considered new testing. The KL date code is November 1954. It is tested for shorts, noise, gas and strength. I'm in the process of listing thousands of tubes. If there is something particular you're looking for let me know.