I know a guy with a hasselblad that I know for a fact hasnt been used in 20 years. Not exactly sure of the model - think 500c or similar. He knows I have a mild interest in it, although i've never tried to deal. Recently he half implied he might move it on. I haven't seen it. don't really need it, but it could be a bargain because he thinks it is probably not fit to use without a service, and i did agree with this when it was mentioned.
haven't got a clue how vulnerable a hassy is to age degradation, and how much of a risk it could be.