If you do wish to play around with it, given the age, I would suggest having someone familiar with older power supplies and CRT displays to test the PSU and CRT high voltage circuits.

It's possible something of that vintage will have a capacitor fail shorted, and applying power could fry what would have otherwise been a relatively easy fix. They're basically museum pieces at this point, and somewhat valuable (both $ and historically) if it is working regardless of cosmetic condition.