If a pristine, concours-ready Mercedes-Benz 300 SL will set you back over $2 million, how about one that needs work? Try $4.5 million or more.
Why is this 300 SL worth so much more than one in No. 1 condition? For starters, the car was ordered new by 24 Hours of Le Mans champion, N.A.R.T. owner…
