"Restoration" vs "Preservation" vs "?"

[M3-SRT8]

As to which TVs should be the object of all this discussion, I would say the cut off date, with certain exceptions, would be for sets manufactured up to mid-1948.

I say this because up until that timeframe, total US production was @500,000 to date. After that, production exploded. Exponentially.

The exceptions? We know what they are. Color Sets, 30" DuMonts, etc.