That's a nice looking car but the carburetor models are problematic to service, as are many older carbureted non-American cars. I've owned a couple of that engine 10 years ago or more and certain essential carb parts were NLA then.
Up until very recently, MB has supported virtually everything they ever made with replacement parts. In 1999, I finished the resto on a beautiful fin tail sedan, ('67 250), and easily bought all sorts of small trim pieces and window regulator type parts at the dealer. This is now over. They will no longer support older cars, (not sure what the actual year cutoff is but probably varies with chassis series), they are only selling off the parts they have and are running out quickly.
I know people who deal with this on a daily basis. It's a nightmare for the repair shops that specialize in older MB cars, of which there are so many still around.
That said, the cars still have a following and value, though it might change somewhat as stories of unavailable parts become common.
