How much is a 1975 Ford F-150 worth(cash value)?

My dad has a 1975 Ford F-150 pickup truck. I wanted to drive it until I watched a video of a 2009 Chevy and a 1969 Chevy crash head on at 35mph. The 1969 Chevy was completely destroyed. I know that they're not the same vehicle or company. The only safety feature it has is seat belts. Everything on the truck is original. I looked at the truck and from what I could see, there are not many problems with it. It needs inspected, the bed is rusted in some places and the battery is either dead or the truck doesn't have one in it. My dad is not sure if the truck has a battery in it. I'd like an honest answer, if you hate Ford and want to answer this saying it is junk, don't answer.
Added (1). There would be a battery put in before it is sold.

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