purchase price ONLY car letter? hypothetical question

young I just had a fight with a known, who is the firm opinion that you can sell a pure car letter without a motorcycle. assuming the motorcycle has been completely destroyed in an accident, the owner has already sold all parts (except for the frame, which is short and small) and now still lie the letter with registration and a year of tuv. I say, he does not get a buyer for it, he said that he would surely get euros for it… what do you think? But since I have no idea, I’d rather ask here, one of you will know.