Yes, you are asking a question that cannot be answered. How much experience do you have using moisture meter. Checked any boats with one and compared to results of a hammer test?
You didn't say if it had teak decks? I suspect that every teak deck of that age has moisture in the core beneath it.
I think a moisture meter is but one tool in the bag of tools that one can use to figure out the condition of a boat. A good surveyor with years of experience would be a better choice to answer this question.
If everything else is ok with the boat, maybe sign a contract, hire a surveyor but ask him to break his work down into two parts- core condition and everything else. Then start with the core and if it is a bust call off the survey and walk away from the deal.
But the moisture just might be normal for that age of boat.
David
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