I didn't know what it was beyond, "Hey, look at the old boat!"
It was a 1959 Coronado Century, a 21 ft. speedboat with a inboard Ford V-8. Here's the company history. They made boats for decades.
Here's pictures of one restored. It was for sale for $47,000.
If the one I looked at is any indication, $47K would be a fair price. I don't think you're going to be able to restore one for less. The bottoms rot out, the transoms go. On this one, it looked like pretty much every piece of wood was good enough to be used as a form for crafting it's replacement. The owner said it had been sitting up for 40 years.
Here's a 1965, with a series of pictures from purchase all the way through the rebuild.
The boat I looked at would need every bit of that work. Here she is: