its a shame that your friend lost his Cyg's documents but is much more of a shame that people here are telling you to do 2 numbery and sell it by "fraud" yes thats what I would like to call it "Fraud".
if your friend has lost the originals that his luck and above all an azmaish from Allah. Ask your friend to accept it. if Allah has given your friend a 1 crore rupee vehicle (as some one here has estimated) that sure HE will give your friend the hosla and bardasht too.
Please excuse my harsh words but this is what our society has come to and that is why we are facing what we are facing today as a nation and as an ummah.
There is one simple thing that we sometimes neglect that we have to answer and pay for our deeds in this world or the here after. Its better to bare the losses here my friend!
May Allah Guide us and give us the courage to be honest with others as well as our selves.