Realistic price Yamaha RD350 LC YVPS

Hello, We have a yamaha rd 350lc YVPS stand long in the cellar and garage at least 15 years. Has only one key.. Has been on the race track. Papers probably have disappeared. Jumps probably. But I did not test. Whether and how it runs… What is a realistic price? I want to buy it from my uncle. It was the machine from my grandpa. According to him it moves in the range 4000+ There was also someone who did not want to pay the price.. Ic h once offered 2000. Is that realistic? Or is it worth much more unkempt standing for at least 15 years. Without TÜV.. I’m concerned above all about the fact that she stays in the family.. My uncle wants to sell.. He said a well-known says it would be a collector object and therefore so expensive… but 4000 for a kfz without TÜV and papers I don’t think is realistic now. Dear Sarah Wursthorn [Transferred from motor talk from the topic ‘Price yamaha rd350 lc YVPS’.]