Keep Kappa, yes or no?

Hello together, In the garage of my grand aunt (86) still stands the car of her husband who died a few years ago. This is a golden Kappa 2.0 automatic with blue Verloursitzen and actually everything at equipment. He would have to be so year 97 or 98 and has no 100,000 kilometers. Macken I could surprisingly also find none. Since she also for some time no car drives, the good one just stands around. My consideration is now whether we the car v buy, or if I should keep and eventually make a vintage car. Can someone say something to increase the value of such cars? I think it’s kind of great. In my opinion, a typical retirement car. What’s the value of such a car now?