I researched these boats and looked at a few. Without looking at my files on them this is what I recall:
Great old boats...but:
All the ones I looked at had soft decks. Teak screwed to fiberglass is a great idea for the first owner but down the road it is trouble.
Soft cabin sides. These were the result of the portlights leaking.
One had a wooden mast, which would not bother me but it had been recently painted.
Generally all Union owners seemed less than interested in their boats. I got the feeling that the boat was part of a dream that they didn't want to let go (common with all boats but with the Unions it seemed like 100%)
The painted mast was one attempt to hide stuff but other Unions had used similar methods to sell the boat. One claimed to have rebuilt the engine when it was clearly just a repair and a poor one at that.
Then there are all the old boat stuff. Owner thought the DECCA system was worth cutting out half the bulkhead and seemed to think it increased value.
Most subsystems needed repair/replacement.
Have faith that the oceans are going to rise and flood the world, that plague and pestilence brought on by Climate Change is going to punish us for not believing. Please do as they say it is our only hope. :P