I went through a few and here is some of what I found, The most interesting to me are two that say US ARMY US NAVY 1944 6s7, Zenith 7S7,7V7,2B7, GE 8106, VAN DYKE 6SD7, HYTRON 6K6GT/C, RCA 8S9, ART 6SD7, MEISSNER 16-6757, TUNG SOL MR25, SYLVANIA 6S8GT, GE 65B7Y, GE CV 188-5 SYLVANIA 65B7Y, RCA MODULE 5 PIN 153745