Whats a reasonable asking price low mileage 84 ford f250?

i previously asked this question with the wrong model… Have now adjusted for correct model and mileage is about 56k

What would be a reasonable asking price for a f250 1984 ford with low mileage one owner but not running. See explanation?
needs cleaned but its not in the worst condition it could be in. My honest assessment is it needs some cleanup but i would say on the mild side. Its not falling apart. Just dont know why it stopped running. The bf took the battery out cause he needed it and when he put it back in it wouldn t start. Weve tried a brand new battery to no avail. But thats about it. Its red and was my late fathers.

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