I'm posting this in hopes that someone else will buy it. I have too many projects, but if it's for sale too long I won't be able to resist. I even have a parts car with a good roof clip.
https://wausau.craigslist.org/atq/d/marathon-1968-mercedes-200d-diesel/7207678146.html
Shame about the roof, not a bad looking car.
Having owned many Mercedes diesels over the years, reviving these is usually easier than gas powered cars. Diesel fuel doesn't tend to cause as much havoc compared to gasoline as it gets old when it comes to gumming things up, but it does like to suck up water. Chances are, with new glow plugs, fresh fuel/fuel purge, and a stout battery, it will fire up. It's hard to kill these motors. That said, they are slower than hell.
Amazingly, glowplugs on Rockauto are available. About $62 set of four
Marc in Indy
I used to have one of these, a 66. They're deadly slow and I couldn't imagine driving one here in Texas except for maybe country roads but the tractor might get pissed when they have to overtake you on a two-lane road.
I'm tempted to buy it, get it running, hammer the dents out, and just cruise around. But I already have a '67 W110 230 project car and a '64 190D parts car.