You will need to replace the old electrolytic and paper (or plastic-coated paper) capacitors if you expect it to play reliably:
http://antiqueradio.org/recap.htm
The capacitors go bad with age, so this is necessary even if the TV was never used.
The TV might have additional problems that were the reason it was retired. If you finish recapping and it still doesn't work, people in this forum can help you diagnose what other repairs it might need.
If you browse the TV articles in this section, you'll get an idea what's usually required to make a vintage TV work normally.
http://antiqueradio.org/restoration.htm
If you never restored a tube device (radio, TV) before, a television is not a good beginner's project. It has high voltage, which can be dangerous, and if you make a mistake while replacing dozens of parts, the TV will not work, anyway. This article has advice on finding a repairman:
http://antiqueradio.org/howfix.htm
I would not turn turn it on any more until you have at least replaced the electrolytics in the power supply. You wan't learn anything more (it doesn't work, duh) and you might damage it.
Phil Nelson
http://antiqueradio.org/index.html
P.S. Cool looking set.