Vacuum tubes: Radio tubes, TV tubes, Audio tubes

The best vintage tubes were designed for military, they are the highest quality (normally more expensive). So besides radio and tv there are critical military equipment that demands the highest quality tubes, stable, durable etc. I have some NOS japanese tubes from the 70’s, marketed as audio tubes especially for hi-fi audio, the manufacturer guarantee they are low microphonic and low noise (for example NEC 6BQ5 Hi-Fi Green series). As you know there is an amps in TV and Radiolas, so these tubes are audio tubes (fine for your modern high-end amps and phono stages, depends on the type of the tube).

Examples being the types 45 and 2A3, which were used in high end radios of the early to mid 1930s

I just mentioned those the other day in another thread here. Emission LAB in Czech Republic still produce those 45s and 2A3 and they are probably the best available today. 

Many industrial tubes are just bad, some are very good.
Military Telefunken tubes are oustanding. 
Russian military tubes are better than industrial.