I think I know the feeling, having sold a Porsche that had sat for a number of years. In 1976, I bought a somewhat disassembled 1956 Porsche 356 A, with my intension of turning it into an outlaw. But shortly thereafter, I discovered that it was a very early 1500 GS Carrera, which changed everything. I realized that first, I couldn’t bring myself to modifying it, but second, because of its complexity, this was one of the last Porsches that I wanted to own. So, I did what any car fanatic, with too many projects, would do. I took it “up north”, stored it in my brother’s barn and forgot about it for 42 years. But the word got out 4 years ago, and I started to get all kinds of calls and offers, most of them bogus. I had a COA from Porsche, so I knew that it was a real Carrera, it was in much better condition than I realized and mostly original, and I had a good idea of its value. I let the suiters think that it was more than just the sale, even though I was totally divorced from the car. This way, I controlled the sale on my terms. In the end, both the buyer and I were very happy with the outcome. Best of luck with your venture.