hmmm tubes nga naman, little did those guys know that long after theyre gone, the next generations will be hunting for these glowing glasses. as time goes by, stocks will dwindle and eventually the wells dry up. though demand might not really be that much, the value of nos tubes remains (and increases).
yung ibang diyrs are settling for less commercial, less popular, unnoticed, but available tubes or tube substitute (ex: 5963 for 12au7) to use in their hobby.
the best are tube-tester tested tubes, whether nos or new production.
as for me, i thank God for spin, mang ben & gerry.